Proving Parallelograms With Two Column Proofs - Geometry

This geometry video tutorial provides a basic introduction into two column proofs with parallelograms. It explains the different ways of proving parallelograms. Here are five ways: 1. opposite sides must be parallel. 2. Opposite sides must be congruent. 3. opposite angles must be congruent. 4. 1 opposite side may be both parallel and congruent. 5. Diagonals must be perpendicular bisectors of each other. This video contains plenty of examples and practice problems. Here is a list of theorems used in these two column proofs: reflexive property, vertical angle theorem, definition of a parallelogram, definition of a midpoint, definition of a segment bisector, addition property of equality, substitution property of equality, definition of congruent segments, segment addition, SAS postulate, ASA postulate, and CPCTC.
Polygons: • Polygons
Angles of Regular Polygons:
• How To Calculate The I...
Quadrilaterals:
• Quadrilaterals - Geometry
Parallelograms:
• Parallelograms - Geometry
Rectangles - Special Quadrilaterals:
• Rectangles - Propertie...
Isosceles Trapezoids:
• Isosceles Trapezoids
_________________________________
The Rhombus:
• Rhombus, Basic Introdu...
Kites:
• Kites, Basic Introduct...
Proving a Quadrilateral Is a Kite:
• Proving a Quadrilatera...
Proving a Quadrilateral Is a Rhombus:
• Two Column Proofs - Pr...
__________________________________
Proving Isosceles Trapezoids:
• Two Column Proofs - Pr...
2 Column Proofs - Quadrilateral:
• Two Column Proofs With...
Skew Lines:
• Skew Lines, Perpendicu...
Points, Lines, Planes, & Segments:
• Points, Lines, Planes,...
_______________________________________
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections

Пікірлер: 161

  • @TheOrganicChemistryTutor
    @TheOrganicChemistryTutor6 ай бұрын

    Final Exams and Video Playlists: www.video-tutor.net/

  • @mn-pegasus
    @mn-pegasus5 жыл бұрын

    We all out here struggling with math huh

  • @BiG-JuPO1O1

    @BiG-JuPO1O1

    4 жыл бұрын

    Yep its killing me this year. I rather do algebra then Geomentry.

  • @celeste2221

    @celeste2221

    3 жыл бұрын

    @@BiG-JuPO1O1 Broooo samee Geometry looks like a whole different language to mee!!

  • @williammuller9623

    @williammuller9623

    2 жыл бұрын

    @@celeste2221i remembered being scared of algebra before

  • @jjfanpage4670

    @jjfanpage4670

    2 жыл бұрын

    Dog I got a 20 question geometry test rn and I’m still struggling

  • @khanya5340

    @khanya5340

    2 жыл бұрын

    @@jjfanpage4670 rn?💀

  • @oimobbu2330
    @oimobbu23305 жыл бұрын

    Bless his soul this is gonna save me and my grade

  • @oimobbu2330

    @oimobbu2330

    5 жыл бұрын

    IT DID, I GOT AN A ON MY TEST CUZ OF THIS❤️❤️❤️❤️❤️❤️❤️

  • @tashnimulmazid9706

    @tashnimulmazid9706

    4 жыл бұрын

    Lmao good job

  • @pilot4910

    @pilot4910

    4 жыл бұрын

    Pose

  • @skhumbuzoxulu9385
    @skhumbuzoxulu9385 Жыл бұрын

    😭😭🥺can we please give this guy a round of applause cause in every video I've watched of him explaining any topic I excelled in that class or topic😹he takes the whole 50 minute lesson in class full of confusion into something simple taught within 20minutes🔥thank youuu

  • @footygoatz7552

    @footygoatz7552

    Жыл бұрын

    15 mins ago,the struggle is real😔

  • @skhumbuzoxulu9385

    @skhumbuzoxulu9385

    Жыл бұрын

    @@footygoatz7552 😭but we still pushing and grinding

  • @juniourkalegga6247
    @juniourkalegga62474 жыл бұрын

    yep still struggling tommrw test gonna be tough

  • @williameyelash4426

    @williameyelash4426

    4 жыл бұрын

    yo how was it

  • @Elsayed80

    @Elsayed80

    3 жыл бұрын

    Hope you past that test 😂

  • @nosi9189

    @nosi9189

    3 жыл бұрын

    I relate to this comment rn

  • @user-pn4wk6tn9d

    @user-pn4wk6tn9d

    3 жыл бұрын

    How'd it go

  • @nosi9189

    @nosi9189

    3 жыл бұрын

    @@user-pn4wk6tn9d I passed with a 60 lol...

  • @joules1356
    @joules13565 жыл бұрын

    why am i always having a hard time here

  • @Icejaker
    @Icejaker5 жыл бұрын

    I hate honors geometry

  • @adamfilipkowski8774

    @adamfilipkowski8774

    5 жыл бұрын

    Whos ur teacher?

  • @sg-ud2fv

    @sg-ud2fv

    5 жыл бұрын

    @@adamfilipkowski8774 ur mom

  • @Icejaker

    @Icejaker

    5 жыл бұрын

    Adam Filipkowski mr. Ben dover

  • @andyh.7428

    @andyh.7428

    5 жыл бұрын

    Ms. Jack P. Ness

  • @theleakyhorcrux535

    @theleakyhorcrux535

    4 жыл бұрын

    Me too :(

  • @carlotiu1308
    @carlotiu13084 жыл бұрын

    "And now we have a problem, I am out of space". Damn I love this guy, no homo.

  • @K141Ghost
    @K141Ghost4 жыл бұрын

    You actually helped a lot so here’s a new sub

  • @georgesadler7830
    @georgesadler78302 жыл бұрын

    MR. Organic Chemistry Tutor, thank you for another lengthy video/lecture on Proving Parallelograms With Two Column Proofs. I found this topic long and somewhat difficult to follow, so I will review this material for a clear and deep understanding.

  • @gabriellepillay4394
    @gabriellepillay43945 жыл бұрын

    Great video 👍but in tests or Exams they don't give us alot of Given Statements like you have and that's where we tend to get lost

  • @mili9781

    @mili9781

    4 жыл бұрын

    Gabrielle Pillay sometimes there’s two in one given statement

  • @beakerthebeaver581

    @beakerthebeaver581

    2 жыл бұрын

    They usually give 2 given statements so his proof is exactly like the test

  • @expatrocious
    @expatrocious4 жыл бұрын

    My question doesn’t have lines in the middle I was just given points :/

  • @Erica-yg2uo
    @Erica-yg2uo3 жыл бұрын

    Litterally somebody tell me how this will help me in my real life job some day.

  • @stephaniesguide8320

    @stephaniesguide8320

    2 жыл бұрын

    It can help you understand your exam and then you pass, earn a degree and get a job😊

  • @truezeonic3617

    @truezeonic3617

    2 жыл бұрын

    It doesn't.

  • @neglecteduzumakigmailcom

    @neglecteduzumakigmailcom

    Жыл бұрын

    @@stephaniesguide8320 the matrix system 💀

  • @josiahwhite3157

    @josiahwhite3157

    Жыл бұрын

    I’m sayin

  • @Little-rb6rb

    @Little-rb6rb

    Жыл бұрын

    how does playing fortnite 8 hours a day help you in your job

  • @adylynemahaffey4449
    @adylynemahaffey44495 ай бұрын

    In order to take a retest I need to watch 14 20-30 minute long videos plus fix my test all in 3 days with no time to do so. Thank you for making this really easy for me and wish me luck lol.

  • @stephaniesguide8320
    @stephaniesguide83202 жыл бұрын

    Great video, and lovely explanation

  • @Sam-ft8cp
    @Sam-ft8cp3 жыл бұрын

    Thank you so much this helped a lot!

  • @caitlynscholl3839
    @caitlynscholl38394 жыл бұрын

    this was really helpful... thanks!!!

  • @defencematterswithdhruv385
    @defencematterswithdhruv3853 жыл бұрын

    Thanks you cleared my doubts

  • @sweetsprite
    @sweetsprite4 жыл бұрын

    thank u i needed this :)

  • @nicolaskriewall764
    @nicolaskriewall7643 жыл бұрын

    This helped me so much

  • @nicholassendin6373
    @nicholassendin63732 жыл бұрын

    Man was bugging on that last question he could have just said it was congruent and moved but he low-key wrote a whole essay

  • @lucascaffo1386
    @lucascaffo13863 жыл бұрын

    Super helpful 👍

  • @lahiruviduranga5978
    @lahiruviduranga59783 жыл бұрын

    in the fist question cant you use alternative angles and then prow two lines are parallel and congruent

  • @yannah5198
    @yannah51984 жыл бұрын

    Thank you so much

  • @Pickles665
    @Pickles6656 ай бұрын

    I gotta lock in for this midterm

  • @dikeledimathabatha3548
    @dikeledimathabatha35482 ай бұрын

    Thank you very much it helped me understand a lot🙂

  • @pierremathieu6632

    @pierremathieu6632

    2 ай бұрын

    De 3❤

  • @remilokhandwala6045
    @remilokhandwala60455 жыл бұрын

    thank you!!!

  • @teaghanpollack4489
    @teaghanpollack4489 Жыл бұрын

    tysm this was so so so helpful

  • @tech_no_logy_1616
    @tech_no_logy_16162 жыл бұрын

    Thank you so much you saved my future from a great risk

  • @andrewjustin256
    @andrewjustin256 Жыл бұрын

    Thank you so much!

  • @clarissestanford
    @clarissestanford4 жыл бұрын

    i was so worried and all 'WHERE'S G!?'

  • @Tangerine2600

    @Tangerine2600

    2 жыл бұрын

    sameeee

  • @elisedeeb550
    @elisedeeb5505 ай бұрын

    Thank you so much ❤😭

  • @AstroTechian
    @AstroTechianАй бұрын

    the first proof you could've said for step 2 if two lines are cut by a transversal so that the alternate interior angles are congruent then the lines are parallel then for step 3 if one pair of opposite sides in a quadrilateral are both congruent and parallel then the quadrilateral is a parallelogram

  • @nogayangzomtenzin9516
    @nogayangzomtenzin95164 жыл бұрын

    YOU ARE A GOD THANK YOU

  • @hqs9585
    @hqs9585 Жыл бұрын

    time 20:50, the diagonals bisecting each other DOES NOT man the angle is () , (as you drew it inn your illustration), only rhombuses and squares form right angles at diagonal intercepts. GREAT tutorials , thanks.

  • @yanky0424
    @yanky04244 жыл бұрын

    Thx very helpful

  • @sheekhchannel6948
    @sheekhchannel69486 жыл бұрын

    Thanks it is my homework.

  • @godslayer158
    @godslayer1583 жыл бұрын

    What are you using to display and draw your lessons?

  • @MeklitTsegaye324
    @MeklitTsegaye324 Жыл бұрын

    Thanks a lot

  • @bobbyno93
    @bobbyno93 Жыл бұрын

    I'm pretty sure half these proofs can be done A LOT faster.

  • @lordcooper5889
    @lordcooper58892 жыл бұрын

    For the second proof number 7 can i say that ABCD is a parallelogram and as a reason angles BD and AC are congruent and therefore if opposite angles of a quadrilateral are coungruent then the quadrilateral is a parallelogram without step 8? Pls answer quick and if not explain. I have an exam in two days.

  • @lordcooper5889

    @lordcooper5889

    2 жыл бұрын

    Its at 10:03

  • @undertaker8815
    @undertaker88156 жыл бұрын

    First and i love u and merry Christmas, happy new year to everyone

  • @xpiredyakult
    @xpiredyakult3 жыл бұрын

    Hello there. My given parallelogram doesn't have lines in it. What should I do? Should I just get the congruent and parallel opposite sides? Also the interior angles? I'm struggling

  • @kokipop6470

    @kokipop6470

    2 жыл бұрын

    late response but you can usually just plot the lines yourself by using Line Postulate (states that any 2 points has a line within it) let's say you wanted to make 2 diagonals and plot a line connecting the points A and C and B and D like in the video basically in a 2 column proof your statement would be "Plot lines AC and BD" and your reason would be line postulate

  • @preciouspets8m396

    @preciouspets8m396

    Жыл бұрын

    @@kokipop6470 tysm ❤

  • @boed81_
    @boed81_9 ай бұрын

    Thanks

  • @myyuh99
    @myyuh996 ай бұрын

    thank youuu

  • @Afhvddj_123
    @Afhvddj_1236 жыл бұрын

    Sir, please provide me the link of "Droppler effect" of physics.. Thanking you..

  • @noobster9999

    @noobster9999

    3 ай бұрын

    So did you get that link after 6 years?

  • @amy-kt1th

    @amy-kt1th

    3 ай бұрын

    @@noobster9999 lol

  • @coreybeshoar8703
    @coreybeshoar87035 жыл бұрын

    I think steps 7 and 6 are incorrect for your last proof

  • @adisonsmith9738
    @adisonsmith97384 жыл бұрын

    for the 1st proof, coudn't you just sat that ba=cd because AIA--> parallel? and parallel congruent lines prove parallelogram?

  • @ame6863

    @ame6863

    4 жыл бұрын

    Adison Smith that could technically be an iscosceles trapezoid it however you spell that, it needs to be 2 pairs of congruent lines

  • @tyywtf
    @tyywtf Жыл бұрын

    Gotta test next period😂😂

  • @ahmadfallah700
    @ahmadfallah7005 жыл бұрын

    Great vid, but if we prove that opposite sides are parallel, isn’t that also the case with a rhombus?

  • @landonmontano0950

    @landonmontano0950

    4 жыл бұрын

    yes because a rhombus is a parallelogram

  • @beakerthebeaver581

    @beakerthebeaver581

    2 жыл бұрын

    In this video he is proving parallelograms, He wasn’t really proving types of parallelograms.

  • @gaymf469
    @gaymf4693 жыл бұрын

    im gonna kms🧍‍♀️

  • @Tangerine2600

    @Tangerine2600

    2 жыл бұрын

    have you done it yet? or have you realized that proofs are just a super hard concept to easily grasp the first time around, and that you are still growing as a person?

  • @iwantagiantscythe7796

    @iwantagiantscythe7796

    Жыл бұрын

    LMAOOO the fact that I’ve seen u in other geometry videos I’m struggling so hard

  • @MiddleBroski
    @MiddleBroski3 ай бұрын

    got a exam tmr and onlt started studying at 6, wish me luck

  • @magicalhazzard6672
    @magicalhazzard66723 жыл бұрын

    hey sir, can i hire your brain for exams?!

  • @skhumbuzoxulu9385

    @skhumbuzoxulu9385

    Жыл бұрын

    Lol😹

  • @winternote4546
    @winternote45463 жыл бұрын

    baket ba di ko gets😭

  • @demirturkoral1802
    @demirturkoral18022 жыл бұрын

    I love you. literally I gotta say. I love you

  • @ldt4199
    @ldt41994 жыл бұрын

    Yk I’m finna fail my yearlys gosh darn

  • @lee-ks6tg
    @lee-ks6tg Жыл бұрын

    bro explained in twenty minutes what khan academy tried to explain in an hour

  • @yomumzac2920
    @yomumzac29202 жыл бұрын

    Got a test tom 😢😅

  • @nachopatel4634
    @nachopatel46342 жыл бұрын

    my teacher is giving me a test 2 days be4 vacation rip

  • @stax5745
    @stax57454 жыл бұрын

    where is g ???

  • @user-pf5nw3wl6h
    @user-pf5nw3wl6h5 ай бұрын

    Hey sir,what can we reflect about this video?(plss notice me^^)

  • @toobusycountin50s
    @toobusycountin50s Жыл бұрын

    This proves that the world is a simulation…

  • @hexader
    @hexader Жыл бұрын

    but a kite doesn't have exactly a pair of congruent opposite angles....

  • @kylebiljon5463
    @kylebiljon54633 жыл бұрын

    Man 2morows June p2 test ugh

  • @SPICSE
    @SPICSE5 ай бұрын

    I fucking love u bro

  • @lolo-xf8xr
    @lolo-xf8xr3 жыл бұрын

    Sorry, you can just cut all this short

  • @toobusycountin50s
    @toobusycountin50s Жыл бұрын

    Great video but my teacher is useless it’s sad I have to go online because they won’t explain it to me

  • @user-iu4nn4nf6o
    @user-iu4nn4nf6o2 жыл бұрын

    Glean

  • @jeronimoadames6624
    @jeronimoadames66245 жыл бұрын

    Why do you have adds

  • @alma8882
    @alma8882 Жыл бұрын

    I'm not understand any thing

  • @Tangerine2600
    @Tangerine26002 жыл бұрын

    I wanna know how many people here are watching this at 12:00 AM like me

  • @sweetmimosa2903
    @sweetmimosa29032 жыл бұрын

    still don't get it😭💗

  • @yu_ba
    @yu_ba5 ай бұрын

    I still dont get it 🤠

  • @ethanturkewitz6384
    @ethanturkewitz63845 жыл бұрын

    the final step of the proof is wrong. the reason is not definition of a parallelogram but it is chracterisric of A Paralleloram

  • @jeronimoadames6624

    @jeronimoadames6624

    5 жыл бұрын

    ethan 2 whatever the teacher says kid

  • @ryankilburn6966

    @ryankilburn6966

    5 жыл бұрын

    they are both the same thing

  • @Clear-ij7pk
    @Clear-ij7pk3 жыл бұрын

    i hate year 8 math

  • @Shourya19
    @Shourya193 жыл бұрын

    aur ladke kya haal

  • @pierremathieu6632
    @pierremathieu66322 ай бұрын

    Haha haha

  • @kylienicolegarcia6706
    @kylienicolegarcia67063 жыл бұрын

    you sound so cute im attracted i cant focus

  • @user-jq4fn5tf2i

    @user-jq4fn5tf2i

    3 жыл бұрын

    wtf pilipenx

  • @myyuh99

    @myyuh99

    6 ай бұрын

    💀💀💀💀

  • @pierremathieu6632
    @pierremathieu66322 ай бұрын

    Oesy

  • @avaj3350
    @avaj33502 жыл бұрын

    #gonnafail

  • @RandomPerson-kj2dc
    @RandomPerson-kj2dc Жыл бұрын

    i give up

  • @YouKnowImOnMyPeriodYah
    @YouKnowImOnMyPeriodYah Жыл бұрын

    I hate delta math on god

  • @wongalvin840
    @wongalvin8409 ай бұрын

    5:01 you dont need to solve it this way, by knowing angle DCA is equal to angle BAC, we can know CD and AB are parallel (alt.angles,equal). So you can prove ABCD a parallelogram (opp sides equal and //)

  • @themyst8513
    @themyst85132 жыл бұрын

    Thanks