ANGLE THEOREMS - Top 10 Must Know

Here are the top 10 most important angle theorems that you have to know to be successful in your math classes. This video covers angle theorems for various shapes including triangles and circles, and also parallel line theorems. Go to jensenmath.ca for FREE math resources and don't forget to subscribe to the channel if this type of material is helpful for you.
0:00 Supplementary and Complementary
2:33 Sum of angles in a triangle and polygon
5:52 Isosceles Triangle Theorem
7:20 Exterior Angle Theorem
9:34 Vertical Angle Theorem
10:36 Alternate Angle Theorem
13:20 Co Interior Angle Theorem
14:40 Corresponding Angle Theorem
16:25 Angle subtended by arc of circle
18:43 Angle at centre vs angle at circumference
20:24 Test on angle theorems

Пікірлер: 49

  • @Srinath-S.
    @Srinath-S.15 күн бұрын

    Very useful this video sir thankyou !!! Answer is 1) a=68° , b=67° , c=113° 2) d=31° , e=81° , f=112° , g=68° , h=112° , 3) i=40° , j=80° This channel should be available in more languages

  • @thedeathofbirth0763

    @thedeathofbirth0763

    13 күн бұрын

    Thank you for the answers, In number two, angle e is given as 81º the adjacent angle to e is unknown, by straight angle theo it is 99º.

  • @John-ti5lt

    @John-ti5lt

    11 күн бұрын

    It's good to see that we got the same answers.I think it's proof that we understood his explanations well ❤. Happy studies, my friend!

  • @SambhaviJha-lz4tx

    @SambhaviJha-lz4tx

    9 күн бұрын

    can you tell me how did you find d?

  • @jordanlake9178

    @jordanlake9178

    Күн бұрын

    @@SambhaviJha-lz4txhow I found d was I first identified angle E to be 81 degrees because of alternate interior theorem and after that I noticed that angle e formed a vertical angle with the triangle and after that I added 81 + 68 and subtracted it from 180 ( the sum of angle in a triangle) and got the answer 31

  • @jordanlake9178

    @jordanlake9178

    Күн бұрын

    @@SambhaviJha-lz4txor a another way is you can spot out that angle e forms a line( supplementary theorem) so you can subtract it from 180 to get 99 and using the exterior angle theorem you create the equation D + 68= 99 resulting in 31

  • @Your_Average_Rabbit
    @Your_Average_Rabbit16 күн бұрын

    im in 9th grade and i have exams in a few days. This is such a good revision for me lmao thanks for the awesome educational content you put out :)

  • @kevinmadden1645

    @kevinmadden1645

    15 күн бұрын

    Revision or Review? You ought to study for your English exam.

  • @Astute-gf9th

    @Astute-gf9th

    13 күн бұрын

    @@kevinmadden1645 You do know that one can quite literally revise their knowledge with a little summary or review. And even if they were wrong, that doesn't mean you should get ahead of yourself and go about with an insult on them.

  • @ramunasstulga8264

    @ramunasstulga8264

    6 күн бұрын

    ​​@@kevinmadden1645cry about it, socialist!

  • @Your_Average_Rabbit

    @Your_Average_Rabbit

    4 күн бұрын

    @@kevinmadden1645 my grammar may not be the best, but i can certainly get a good revision off of this. It lets me recall everything, from the basics to the advanced, and does function like a quick way to revise. afterall this are just opinions being tossed in the air with no real or absolute way to verify the right or wrong. don't go on insulting someone like this as it may hurt them. try a more calmer approach at correcting someone next time if you do suggest some change.

  • @thedeathofbirth0763
    @thedeathofbirth076315 күн бұрын

    Jensen, I am going through all your courses, I would like to finish them all before September. Your courses are very much parallel to our curriculum. There is no white noise like making jokes and going off topic . You have a calming voice unlike Eddie Woo who is also a good teacher but for some reason he makes me stressed lol . I subscribed but I did not get any notifications for any of your new videos. As I mentioned you really value your and my time so your videos are packed with great reviews and most of the time they clarify what my teachers couldn't communicate to me. So I really don't want to miss any new videos. Can you please check why people aren't getting notification for your new ones? Thanks.

  • @SaeidMOMENI
    @SaeidMOMENI14 күн бұрын

    I enjoyed. Enjoyable. Thanks. God bless You.

  • @alphasaffi9230
    @alphasaffi9230Күн бұрын

    Thank you sir your videos are useful to me

  • @Yes..imAyushi
    @Yes..imAyushi8 күн бұрын

    I have this in my syllabus this year, so this is useful. Thank you 👍

  • @aa-ng4ot
    @aa-ng4ot16 күн бұрын

    That was very helpful.

  • @user-xn4xu6rk4c
    @user-xn4xu6rk4c15 күн бұрын

    Thankyou so much ❤

  • @hamzehalomari7520
    @hamzehalomari752012 күн бұрын

    Very beautiful summary

  • @SambhaviJha-lz4tx
    @SambhaviJha-lz4tx9 күн бұрын

    thanks that was very helpful..

  • @ronaldoe.deleonii3760
    @ronaldoe.deleonii376016 күн бұрын

    Tysmmmm. Can you make one for Combinatorics or whole Statistics and Probability?

  • @shane-vj3pf
    @shane-vj3pf11 күн бұрын

    Omg you are such a life saver

  • @Marshmallow_0426
    @Marshmallow_042612 күн бұрын

    This is so helpful

  • @harrymatabal8448
    @harrymatabal844810 сағат бұрын

    Parallel lines are FUN. Can you see the corresponding angles in F, cointerior angles in U and alternative sngles in N😂

  • @muhammadfaheem5213
    @muhammadfaheem521316 күн бұрын

    What app u use?

  • @revnumber1025
    @revnumber102516 күн бұрын

    Can you do like levels of factoring or maybe derivative (I know you make these videos before but please make it again)

  • @soumikdas3754
    @soumikdas375416 күн бұрын

    I love this series It makes me recapitulate so much concepts

  • @BestEyeEvaHad
    @BestEyeEvaHad16 күн бұрын

    No bisector angle theorems 😢

  • @aguy5321
    @aguy5321Күн бұрын

    5:52 My geometry teacher called this one the Base Angles Theorem

  • @happygamingahs12
    @happygamingahs129 күн бұрын

    Sir please give next video in circles angles theorem

  • @alexandrearaujodecarvalho
    @alexandrearaujodecarvalho16 күн бұрын

    Yes, that's right.

  • @SumitJaiswal-vp7lp
    @SumitJaiswal-vp7lp13 күн бұрын

    How you created this video.. which software u used?

  • @Khashayarissi-ob4yj
    @Khashayarissi-ob4yj16 күн бұрын

    With luck and more power to you.

  • @wisdomackah5765
    @wisdomackah576515 күн бұрын

    Sir please do video about college algebra

  • @thedeathofbirth0763
    @thedeathofbirth076315 күн бұрын

    To the 5k viewers! You know as well as I do that this video is really helpful, how long would it take for you to click on the thumb up?!! So that other people can find it too...

  • @Anantsharma12i-lp5ql
    @Anantsharma12i-lp5ql5 күн бұрын

    Respect for you bro!l loved this vid!! Does anyone know a good course on geomtry on youtube???

  • @jinjin1156
    @jinjin115612 күн бұрын

    your the best 🎉🎉🎉

  • @jinjin1156

    @jinjin1156

    12 күн бұрын

    you earned my sub

  • @MangaMeld
    @MangaMeld6 күн бұрын

    Thx

  • @TDsdutditbuezur
    @TDsdutditbuezur16 күн бұрын

    Nice It's going in my school😂

  • @kheidlirio9391
    @kheidlirio93917 күн бұрын

    Answers: a=68° b=67° c=113° d=31° e=81° f=112° g=68° h=112° i=40° j=80°

  • @HarsimranSarai-rb1og
    @HarsimranSarai-rb1og5 күн бұрын

    a= 69, c=112, b=68, e=81, f= 112, g=68, h=112, d=31, i= 40, j=80??? idkk my answers don't match up, but i found a by doing 180-112 which is 68

  • @Jepleg
    @Jepleg16 күн бұрын

    a=68 c=113 b=67 g=68 d=31 e=81 f=112 h=112 i=40 j=80

  • @matthewcaranto6390
    @matthewcaranto639016 күн бұрын

    a=68° b=67° c=113° d=31° e=81° f=112° g=68° h=112° i=40° j=80°

  • @rohitvakode1086
    @rohitvakode108616 күн бұрын

    a=(180-112=68°) by stright line c=(360-247=113°) b= (180-113=67°) d =(31° ) e =81°by interior angle theorem F= 180 - 68= 112° g= 68° h=112° i=40° J=2×40 =80° ❤❤❤❤❤❤thank you sp much to clear all fundamental theorems.. but please define trigonometry or 3d jeometry I

  • @SambhaviJha-lz4tx
    @SambhaviJha-lz4tx9 күн бұрын

    A = 68 , B = 53, C = 123, D = ? , E = 81, F = 112, G = 68 , H = 112, I = 40 AND J = 80.

  • @leighmunsayac6203

    @leighmunsayac6203

    Күн бұрын

    D is 31 because E and the missing measure in the upper triangle form vertical angle

  • @fas9320
    @fas932010 күн бұрын

    I need to learn English quickly 😢

  • @davidbrown7142
    @davidbrown714216 күн бұрын

    a = 68 b = 67 c = 113 d = 31 e = 81 f = 112 g = 68 h = 112 i = 40 j = 80

  • @Termlz
    @Termlz16 күн бұрын

    a = 68 c = 113 b = 67 g = 68 d = 31 e = 81 f = 112 h =112 i = 40 j = 80