Circle Theorems

GCSE Maths revision tutorial video.
For the full list of videos and more revision resources visit www.mathsgenie.co.uk.

Пікірлер: 117

  • @ketchurself7979
    @ketchurself79795 жыл бұрын

    Im using this guy for my GCSES, much better than my teacher. You are helping students get the grades they deserve! edit:results day. I got a grade 8 for my maths gcse. Thank you Maths Genie!

  • @gabriellita7236

    @gabriellita7236

    4 жыл бұрын

    Hi, do you think you would have got that grade if it wasn't for him?

  • @rssrrs

    @rssrrs

    4 жыл бұрын

    Daily Football considering he posted this, the answer is obviously yes

  • @htanid599

    @htanid599

    3 жыл бұрын

    congrats on the 8 i guess :)

  • @randomvidz8742

    @randomvidz8742

    2 жыл бұрын

    Very true my teacher is not that good

  • @sanjanamahesh8251
    @sanjanamahesh82515 жыл бұрын

    Goodluck for all your maths exams 😂♡

  • @abdulrahmanjamal1343

    @abdulrahmanjamal1343

    4 жыл бұрын

    Thanks 🖤

  • @turtleblinksgacha

    @turtleblinksgacha

    4 жыл бұрын

    thx n u too

  • @nanaadwoaquayson2736

    @nanaadwoaquayson2736

    4 жыл бұрын

    Amen

  • @lolhaha1921

    @lolhaha1921

    3 жыл бұрын

    Amen

  • @shanicetylersvlogs8554

    @shanicetylersvlogs8554

    3 жыл бұрын

    Thanks 🙏🏾

  • @awppenheimer
    @awppenheimer5 жыл бұрын

    My maths teacher uses your videos to explain things in lessons so he doesn’t have to do it himself

  • @troupemember14
    @troupemember145 жыл бұрын

    I've been trying to understand this for months... You've just explained it in a 10 minute video, thanks so much 😭

  • @melancholics_7808
    @melancholics_78085 жыл бұрын

    This channel is absolutely saving my life rn

  • @harrycraftedgaming

    @harrycraftedgaming

    5 жыл бұрын

    2hrs :)

  • @mathsgenie7808
    @mathsgenie78088 жыл бұрын

    Yeah I will definitely have a look at doing that this weekend. Thank you for your comments.

  • @supervoid2651

    @supervoid2651

    7 жыл бұрын

    Hi, I have a question. Aren't the cyclic quadrilateral theorem and the angels from the same segment theorem contradictory? Because you make a quadrilateral in a circle by drawing two angels from the same two points, just with one below the chord and one above. So both theorems should apply...

  • @mathsgenie7808

    @mathsgenie7808

    7 жыл бұрын

    super void no, the angles in the same segment have to go in the same direction (if that makes sense?) When you draw a chord and split a circle in two you get a major segment and a minor segment - angles in the major segment and equal and angles in the minor segment are equal.

  • @abdalrahmanamrmostafa1975

    @abdalrahmanamrmostafa1975

    5 жыл бұрын

    6:14 isbt y 80 and x 40

  • @andypandyfortnite

    @andypandyfortnite

    2 жыл бұрын

    @@abdalrahmanamrmostafa1975 I thought that at first, but I think a cyclic quadrilateral has to have four points which touch the circumference.

  • @ahmadsaleh1150
    @ahmadsaleh11505 жыл бұрын

    Bruh you save my life, i have a final test tomorrow and i didn’t understand anything BUT now i do after i watched this video ONCE, love you ❤️

  • @OninabResources
    @OninabResources4 жыл бұрын

    Get more on circle theorems from this playlist. The link is: kzread.info/head/PLYwM9CzPztOkE8m2zrJP_bZHEEjtzgHGX

  • @leratosihlangu6341
    @leratosihlangu63416 жыл бұрын

    Thank you very much. I have a test coming up on Monday and I did not know anything.

  • @cerysamber1568
    @cerysamber15686 жыл бұрын

    Thank you very much this really helped !

  • @nguyenhuutu1026
    @nguyenhuutu10264 жыл бұрын

    Theorem 6 that "2 radii make an isosceles triangle" is absolutely true because radius in the same circle is always the same (the property of the isosceles triangle) :))))

  • @thalitaputri6390
    @thalitaputri63906 жыл бұрын

    Thank you for this! Very helpful

  • @rajendramisir3530
    @rajendramisir35305 жыл бұрын

    Thanks for sharing this video. I find it very helpful. You explained well and worked through the examples brilliantly.

  • @dynamicfork5753
    @dynamicfork57536 жыл бұрын

    proper badman my guy maths genie cheers for the video

  • @doulosdenson4450
    @doulosdenson44507 жыл бұрын

    very clear and discriptive.....nice

  • @jaz9677
    @jaz96774 жыл бұрын

    There was so many moments where my face just went 😲😲😲 and I got so engaged I wrote it down for myself (it’s currently spring break lol)

  • @priyadarshani9980
    @priyadarshani99807 жыл бұрын

    it was very helpful....thank you

  • @cmmonboy5376
    @cmmonboy53766 жыл бұрын

    very nicely explained sir....impressive stuff

  • @hamed3423
    @hamed34234 жыл бұрын

    For future reference. Could you clarify the rules for what qualifies as a cyclic quadrilateral? because all the vertices have to touch the circle and the quadrilateral inside doesn't count as one. So it's very easy to apply the wrong rules when finding the angle. Thanks

  • @chiuki5429
    @chiuki54296 жыл бұрын

    My teacher is good at explaining but I'm still watching to refresh my mind. Thanks!

  • @nahid2281

    @nahid2281

    5 жыл бұрын

    we didnt need to know about ur teache being good, that was so irrelevant

  • @tardsandwich7204
    @tardsandwich72045 жыл бұрын

    U helped me get through a a rough patch thnx u

  • @mahuabiswas4589
    @mahuabiswas45894 жыл бұрын

    It's a really awsome explanation of maths it helped me a lot in icse exam thank you so much. I recommend everyone to see this as it's the perfect experience for the exam students😘😘

  • @Nadstar1969
    @Nadstar19698 жыл бұрын

    nice and helpful thanks!

  • @TomKeeler
    @TomKeeler5 жыл бұрын

    Thanks - will use this tomorrow with our MathCounts team

  • @tanachetty4944
    @tanachetty49443 жыл бұрын

    Thank you so much, you're literally saving my life❤️

  • @chipciddy3063
    @chipciddy30636 жыл бұрын

    This video help me so much thank you 👍

  • @angelstarfire
    @angelstarfire5 жыл бұрын

    Thank you so much!! Really helpful!

  • @jintoki9735
    @jintoki97356 жыл бұрын

    i'm studying for my cets(kinda like sats in the us). this was very helpful 👌💓

  • @josh1477

    @josh1477

    5 жыл бұрын

    Sats are what you take when ur 10 years old

  • @afromagazine
    @afromagazine3 жыл бұрын

    Good luck on your test tomorrow

  • @priyankakulkarni7823
    @priyankakulkarni78235 жыл бұрын

    Very well explained Thank you so much sir

  • @sanchitasrivastava9210
    @sanchitasrivastava92107 жыл бұрын

    Thanks for such a nice video. It has now become very easy for me to understand this topic

  • @aliaster9742

    @aliaster9742

    3 жыл бұрын

    not for me xdd

  • @chuck889
    @chuck889 Жыл бұрын

    coolstuff! i noticed on that last one, we could also just halve 55 when we knew it and the missing angle shared endpoints. learned from your lesson. thanks!

  • @aayushmarai686
    @aayushmarai6864 жыл бұрын

    Me in classroom:C’mon ,it’s just a circle .....l know it!!!! .... One night before exam:surfs about circle everywhere.....😭😭

  • @sushi9549
    @sushi95496 жыл бұрын

    woah this is rlly nice

  • @zacharylyttle9367
    @zacharylyttle93673 жыл бұрын

    Nice, clear video. Thank you 🙏

  • @villain2715
    @villain27154 жыл бұрын

    This was and still is simple. It's just that students only come here a day before the test.

  • @sofivip8922

    @sofivip8922

    3 жыл бұрын

    ouch yh thats me

  • @sashannnawilliams1833
    @sashannnawilliams18336 жыл бұрын

    this was really great

  • @isaportbr
    @isaportbr4 жыл бұрын

    Fantastic! I took screen shoots of each.

  • @blone.7529
    @blone.75296 жыл бұрын

    Thanks man you saved me

  • @mikiminach3003
    @mikiminach30035 жыл бұрын

    I love you

  • @majzoubsalah641

    @majzoubsalah641

    5 жыл бұрын

    And Your a guy

  • @cjgo2966

    @cjgo2966

    4 жыл бұрын

    Probably he also meant to say no homo

  • @Omar-kp1ke
    @Omar-kp1ke6 жыл бұрын

    Cyclic= Si-click

  • @hamed3423
    @hamed34234 жыл бұрын

    Do you have to memorise these for the exam?

  • @arielleheart3310
    @arielleheart33105 жыл бұрын

    🙌thank you so much

  • @janematimara2633
    @janematimara26334 жыл бұрын

    Thx u help a lot

  • @nikuslourens655
    @nikuslourens6556 жыл бұрын

    Thank you so much

  • @austingriner8179
    @austingriner81794 жыл бұрын

    "Angles in the same segment are equal" "Angles in a semi circle are always 90deg" These are basically the same theorem; the segment in the semi-circle is the diameter. I've neither tested nor researched this, but I'm willing to bet that if you had a segment that was half the diameter, the angle produced would be 45deg.

  • @shaheenasulthana71
    @shaheenasulthana71 Жыл бұрын

    nice visual explainstion sir

  • @ak47chuck14
    @ak47chuck146 жыл бұрын

    Thxs a lot man

  • @rawdaalaa7039
    @rawdaalaa70393 жыл бұрын

    Thank you so much 💕

  • @jea-nahegrant6077
    @jea-nahegrant60775 жыл бұрын

    Excellent teaching!!!!!!!!! Only thing I have a problem with is the writing.

  • @rosegold6755
    @rosegold67554 жыл бұрын

    Thank you sm

  • @kingstonxu1505
    @kingstonxu15057 жыл бұрын

    nice

  • @pupiniastewart1957
    @pupiniastewart19574 жыл бұрын

    Sick lick man

  • @christophgrant6101
    @christophgrant61014 жыл бұрын

    Thank u so much

  • @reasonablepause
    @reasonablepause2 жыл бұрын

    At 6:45 isnt angle y 80 amd angle x 40? If y is 160 then that doesnt add up 180

  • @dmarcmasterhd1126
    @dmarcmasterhd11267 жыл бұрын

    good work

  • @blupellkingras300
    @blupellkingras3005 жыл бұрын

    maths genie why is that when you gave us the questions after you said the theormes, on the last question that had the cyclic quadrilateral .....why did you use the circumfrence as a point for the shape instead of the point at the center ...is it because the center is clearly obtuse or is it cause of another math principle

  • @blupellkingras300

    @blupellkingras300

    5 жыл бұрын

    i dont get it ...cause if the y of that same question is 160 then it means the cyclic theorem doesnt apply because then the sum of the opposite angles is 260 not 180 someboody answer me

  • @river-sama7681

    @river-sama7681

    5 жыл бұрын

    @@blupellkingras300 i'm late but that's a smaller quadrilateral in a bigger one. for it to be cyclic, ALL it's corners have to be touching the circle

  • @bridqe
    @bridqe2 жыл бұрын

    at 9:12 you could have used the theorem, "The angle at the centre is twice the angle at the circumference". Instead of using isosceles and triangle facts.

  • @emaannazir3556
    @emaannazir35565 жыл бұрын

    Do I have to learn all these rules; because in my maths lesson we were only taught 3 circle theorums

  • @ZetecinsideMotorsport

    @ZetecinsideMotorsport

    4 жыл бұрын

    yes! these are all very usefull in exams

  • @millieburgess3544
    @millieburgess35443 жыл бұрын

    tysm!!!!!!

  • @rf890
    @rf8904 жыл бұрын

    Gday , is there not a mistake at 6:45 , isnt y =80 and not x ?

  • @KalHiwatari

    @KalHiwatari

    4 жыл бұрын

    You are blind.

  • @mathstraining6996
    @mathstraining69965 жыл бұрын

    Nice video

  • @sijietay420
    @sijietay4203 жыл бұрын

    nice man

  • @surjeetkaur327
    @surjeetkaur3276 жыл бұрын

    plz help in last step

  • @thearmyguy1232
    @thearmyguy12326 жыл бұрын

    quick maths

  • @ajsmoth3509

    @ajsmoth3509

    3 жыл бұрын

    Quick mafs

  • @surjeetkaur327
    @surjeetkaur3276 жыл бұрын

    thank you so much but last sum's last step i don't understand

  • @troupemember14

    @troupemember14

    5 жыл бұрын

    I'm late, but: An isosceles triangle is made up of two angles that are equal, and one that is different. As we already know that the top angle is 125°, and that all angles in a triangle add up to 180°, we just have to minus 125° from 180°. We get 55° which we then divide into two to find x.

  • @stimulantdaimamld2099
    @stimulantdaimamld2099 Жыл бұрын

    great

  • @moonwolfyt8633
    @moonwolfyt86335 жыл бұрын

    good lad

  • @mathstraining6996
    @mathstraining69965 жыл бұрын

    Nice video love the presentation actually I also dropped a video about circles

  • @tlotlisomoletsane3598
    @tlotlisomoletsane35985 жыл бұрын

    Thank

  • @tlotlisomoletsane3598

    @tlotlisomoletsane3598

    5 жыл бұрын

    You

  • @rajeshreddypatel1183
    @rajeshreddypatel11836 жыл бұрын

    Thanks

  • @louiswise5417
    @louiswise54175 жыл бұрын

    i swear to god this guy is kavos

  • @nahid2281

    @nahid2281

    5 жыл бұрын

    haha lol, white british has sismial accent

  • @nikolakojcinovic
    @nikolakojcinovic5 жыл бұрын

    audio.

  • @architgupta4433
    @architgupta44336 жыл бұрын

    My computer cant handle this video... Its lagging :(

  • @sophiaguzman5893

    @sophiaguzman5893

    6 жыл бұрын

    Archit Gupta it's not your computer unless his voice is lagging too for you. For me his mouse is lagging

  • @aliaster9742
    @aliaster97423 жыл бұрын

    i actually hate this topic. its so confusing tbh

  • @rustyspoon4319
    @rustyspoon43194 жыл бұрын

    Hey maths genie, why is my son dead?

  • @vinodsidam3155
    @vinodsidam31557 жыл бұрын

    Hi

  • @conor0312
    @conor03125 жыл бұрын

    honestly my teacher is so bad how am i meant to learn from him just doing the questions on the board with no explanation before so annoying

  • @mathstraining6996

    @mathstraining6996

    5 жыл бұрын

    That's why we are here😁

  • @harveyhughes2228
    @harveyhughes22284 жыл бұрын

    this wasn't very helpful