this is my 3rd time going to take my sc exams i understood this after 4 years..im so grateful to finally understand this..i have exams tomorrow..i hope i pass this time
Hii, Im 12 and did not understand alot of circle theorems in school cause I was sick, and now I have my maths exams tomorrow✋😭 Was panincking cause i couldnt find a good video until I came across this. TYSM you saved my life! Hope i pass my test lol!
Hey, was looking for a guide on circle theorems. Doing early GCSE and was really struggling with how to implement these rules. You've really saved me! Thank you so much!
@@pinkflamingo_ it was really good! No circle theorems came up on it but I bet that just means that P4 (which I’ve got tmrw) is packed with them. I made a few mistakes but I calculated the lowest I can get and it’s around a 85%, so I think it’s a guaranteed A :D
I was having trouble recognizing angles in segments before this video. But this video cleared all my confusions regarding this topic. Great video. Even the examples taken were difficult and great, considering this video is made to help students.
THANK YOU AGAIN! i think i’ve commented on ur videos before haha😂.but i never ever rlly understood circle theorems which is why i dropped marks on that section in my maths test. already 3 mins in and everything feels clearer. DON’T STOP WHAT YOU’RE DOING! THANK YOU SO MUCH!
Another way to calculate angle BCF in the second worked example is toagain observe ACD is 35 deg (isoceles triangle) and ACB is 90 deg (since AB is a diameter), so angle BCD is 125. This means that BAD is 55 deg (cycilc quadrilateral) so BAD is 20 deg (55 deg - 35 deg) as is BCF.
1: Angles in same segment are equal. 2:angles in a semicircle or on diameter is right angle mean 90°.3: the angle at the centre is twice the angle at the circumference.
Example 2: It's much easier: ACD = 35°; because the legs of the triangle are the same lenght ACB = 90°; same reason (Diameter) DCE = 35° (Last theorem) FCB = 180° - 35° - 35° - 90° = 20°
There's this really ez way to answer the last question, I'm not sure if it will get you full marks though? you create an imaginary tangent that touches the circle at point B, then the radius (QB) makes a 90 deg angle with the tangent (theorem) and angle ACB = the angle made between the chord AB and the tangent (alternate segment theorem) = 40 deg angle ABO + 40 deg = 90 (cuz the radius makes a 90 deg angle with the tangent) angle ABO = 50 deg
Have you an idea? How can I solve this problem, please? Given a square ABCD of side 10 cm, and using the corners as centers ,construct four quadrants with radius 10 cm each inside the square. The four arcs intersect at P,Q, R and S . Find the area enclosed by PQRS. Thank you so much .
best videos!!! but just one question, are there not 8 Theorems? the one that goes " the radius through a midpoint of a chord will bisect the chord at 90 degrees"
11:54 is it not angles of the same segment? Isn't angle CAB and COB 58°? I'm so confused 😕😭 Or does it have to be on the circumference for the theorem (angles in the same segment) to apply?
I do like to say the sequence of theorems should be arranged as follows Theorem 3 should be the first. first will be 2 2 will be 3 Then the theorem 4 Why? The theorems 1,2,4 (according to your sequence )are based on theorem 3(according to your sequence)
Thanks for sharing, although I am not sure it is really any simpler? There are often many ways to approach circle theorems questions. As long as you're clear it's all good!
These are way better than the theorems and how they’re presented in American texts. Nicely done.
and english
Im not suprised
My teacher always talked about angles "subtended"
I’m 40 learning this stuff for fun now and this is stuff hs kids are learning. That’s awesome, do great things kiddos
I'm 14 and learning this at school, don't quite understand how this is fun 😭
@@f0xt3r11 ikr even my exams are due to start in 10 days and i still dont understand how now how funs that?
@@f0xt3r11im 14 and same
for. FUN?
@@The-Survivalist1 nah bro by "fun" i was being sarcastic i just revise watching sir @1stClassMaths
got my gcse tomorrow. thanks for the helpful video
fr
same good luck ahhhh
Frr
Same good luck 🤞
Got my GCSEs in an hour
I have a mock exam today
I hope I pass because of your videos
Hope it went ok!
Did you pass?
Bro how it went?
Did you pass or not?
Omggggg my other name is also anjalaaaa.....it's js so rare to find someone with the same name🤩🤩🤩
You actually made me understand circle theorems thank uuu
Honestly just an amazing video, thank you so much.
You're very welcome!
this is my 3rd time going to take my sc exams i understood this after 4 years..im so grateful to finally understand this..i have exams tomorrow..i hope i pass this time
this explanation is better than teaching on a board...thank you so much ...God bless U🤩
This is the best and the most thorough explanation of circle geometry wow .I understand a lot now😊
Hii, Im 12 and did not understand alot of circle theorems in school cause I was sick, and now I have my maths exams tomorrow✋😭 Was panincking cause i couldnt find a good video until I came across this. TYSM you saved my life! Hope i pass my test lol!
Glad I could help!
doing circle theorem at 12???? i’m only doing it at 16 😂
i love this. i was so lost in circle thereoms but learnt it and could answer questions correctly thanks to you
i have my test in 20+ days, i dont understand a thing yet.
i have a math test in 2 hours 😭
Bro😂😂😂 never do that again every thing should be in his time 🫡
So, how did it go?
What score did you get
I had a math test in 1988😊
Story of my life right here, watching UA-cam videos hours before a test.😮💨
Hey, was looking for a guide on circle theorems. Doing early GCSE and was really struggling with how to implement these rules. You've really saved me! Thank you so much!
Great to hear!
Just wanted to say, as someone studying this from Brazil, your channel is an amazing gem, keep up the great work and thank you 🙏
from brazil is mad 😭🙏🙏
u play minecraft 😭🙏🏼@@DannyOF
@@azeemrazzaque9949 ????
@@azeemrazzaque9949 ???
thank u so much man i watched hundreds of circle theorems lectures but i didnt get it till i watched ur video ur very talented
Got my iGCSE exams tomorrow at 10AM. 12 hours left. Thank you for this video, it’s super helpful! Let’s hope I crush this test :D
GL
how was it
@@pinkflamingo_90% chance she doesn’t respond 💀 they never do
@@pinkflamingo_ it was really good! No circle theorems came up on it but I bet that just means that P4 (which I’ve got tmrw) is packed with them. I made a few mistakes but I calculated the lowest I can get and it’s around a 85%, so I think it’s a guaranteed A :D
@@Jimmy-fr1ig defied the odds 🔥
your programme is useful to my mathematical life
You're helping me with a test in 1 hr 🙏
Really like the way you teach. Thank you very very much.
You are welcome!
got my gcse today wish me luck :)
I have igcse math exam tomorrow pray for me guys
Same😭
same, good luck !
same wish you the best
God bless you
Same 😢
Got my mocks in a week, I am currently surviving using these vids, wish me luck.
I was having trouble recognizing angles in segments before this video. But this video cleared all my confusions regarding this topic. Great video. Even the examples taken were difficult and great, considering this video is made to help students.
You're very welcome!
You've done what I thought I'd never do .....understanding the Circle cause I know it now oh my God 😢❤ I'm no longer afraid
Very well presented - Thank you!
THANK YOU AGAIN! i think i’ve commented on ur videos before haha😂.but i never ever rlly understood circle theorems which is why i dropped marks on that section in my maths test. already 3 mins in and everything feels clearer. DON’T STOP WHAT YOU’RE DOING! THANK YOU SO MUCH!
Very glad to hear this! I will keep making content don't worry! Thanks for commenting. :)
Thank you so much sir.. you have helped me to understand circle theorem better 🙏
You are most welcome
Thanx for putting all that stuff together in one video of reasonable length! Great job 👍
🙂👻
Another way to calculate angle BCF in the second worked example is toagain observe ACD is 35 deg (isoceles triangle) and ACB is 90 deg (since AB is a diameter), so angle BCD is 125. This means that BAD is 55 deg (cycilc quadrilateral) so BAD is 20 deg (55 deg - 35 deg) as is BCF.
I was in a 2 hour class about circle theorems and this video helped me more than that class
My teacher just posted a four hour lecture about it, when this 14 minute video covers it all.
1: Angles in same segment are equal. 2:angles in a semicircle or on diameter is right angle mean 90°.3: the angle at the centre is twice the angle at the circumference.
So underrated tysm
No problem 😊
this video explained the topic so well! i can actually understand it step by step, thank you so so much! 💜
Glad it was helpful!
Such a good short summary of theorems❤❤
Imagine watching this an hour before the exams😂😅
Then you're either going to get there and not remember anything or you will remember everything.
literal lifesaver oml 🙏
Danganronpaa
Watching this 2 hours before the exams 🕺🕺
howd it go?
Same here
real
Thanks for this. I can now help my son with his revision.
Example 2: It's much easier:
ACD = 35°; because the legs of the triangle are the same lenght
ACB = 90°; same reason (Diameter)
DCE = 35° (Last theorem)
FCB = 180° - 35° - 35° - 90° = 20°
Thank you so much
I really appreciate the use of different colors to explain the concept
Glad it was helpful!
The day after tomorrow I'm writing ,,
Man your a life saver
Just started revising today. Got my exam tomorrow 😭
Same
bro i’m learning this whole unit at 11pm bc i was away on medical leave and my teacher won’t cut me any slack
What a rich review of geometric
Relations. Thank you. 10:01 10:04
Watching this 5 hours before my exam wish me luck
how did it go?
Fab video - so clear.... thanks... Helping daughter with GCSE maths!
your explanation and the way you deliver the idea is amazing, also love the amount of examples thank you.
Glad you liked it!
Top viewed video, pls reach 1 million
Thanks very much for your explanation and God bless you.
good luck to everyone watching 30 minutes before the exam
I have a 3hr math exam in 5hrs and Im studying geometry rn 😭🙏🏼
There's this really ez way to answer the last question, I'm not sure if it will get you full marks though?
you create an imaginary tangent that touches the circle at point B, then the radius (QB) makes a 90 deg angle with the tangent (theorem)
and angle ACB = the angle made between the chord AB and the tangent (alternate segment theorem) = 40 deg
angle ABO + 40 deg = 90 (cuz the radius makes a 90 deg angle with the tangent)
angle ABO = 50 deg
My fav topic. Now I can attack it without fear🎉🎉🎉
Excellent
Love from Dubai
An Indian
Watching this 1 hour before my exam 😀
Excellent explanation
Thanks!
Thank you very much for this! 💙
So crystal clear concept
Thank you for the clear explanation!
watching this an hour and 20 mins before my paper 1 gcse x
same
circle theorems is paper 2 and three lol
Before this video I had great difficulty in understanding circle theorems.
I'm watching this video 4 hours before the Edexcel IGCSE 9-1 Mathematics Higher tier
i love your videos please don't die
I promise, I will never die.
Honorable Maths expert i have a question entangled with, can you solve it for me being a generous maths expert please?
Thanks a lot professor I follow you from Algeria
You are very welcome
Watching from Zambia
got p2 tmrw muchas gracias aficio esto es para vosotros siuuuuuuuuu
Best teacher on god
National exams tomorrow, just watching for a memory refresh, already studied for like two weeks straight
Nice Information
thanks this was very helpful👍
Have you an idea? How can I solve this problem, please?
Given a square ABCD of side 10 cm, and using the corners as centers ,construct four quadrants with radius 10 cm each inside the square.
The four arcs intersect at P,Q, R and S .
Find the area enclosed by PQRS.
Thank you so much .
It really helped thank you.
You're welcome!
Very useful. Thank you.
best videos!!! but just one question, are there not 8 Theorems? the one that goes " the radius through a midpoint of a chord will bisect the chord at 90 degrees"
Hi yes you're correct. This theorem is almost never used but you can find it in my proof of circle theorems video.
@@1stClassMaths ok thanks!!!
Thank you very much, l now get it and i am gonna ace my exams.
Muchas gracias por tomarte la molestia de hacer este precioso video.
No problem!
Literally my sir did not explain this properly so when I watched this video I understood the concept
Well explained sir.
You're never too old to learn mathematics.
Nice explanation
Thanks!
Thank your mind so much this video is sooo clear
Congrats on 100k views!
Thanks for pointing this out! I hadn't realised. That's incredible!
thanks u need more views :)
Thanks. The algorithm doesn't like me so much though :D
How can I like this 300000 times😭😭😭😭😭
Not sure you can. Once is plenty though thank you :)
p.s. write 300 000 in standard form for a bonus like.
I have maths test next 10 min😭😭
Excellent , Thanks
Thank you very much 😊😊
Thank you!
Thank you very much that will help
11:54 is it not angles of the same segment? Isn't angle CAB and COB 58°? I'm so confused 😕😭
Or does it have to be on the circumference for the theorem (angles in the same segment) to apply?
For the angles in the same segment they both need to be on the circumference. I think you worked this one out yourself :)
I do like to say the sequence of theorems should be arranged as follows
Theorem 3 should be the first.
first will be 2
2 will be 3
Then the theorem 4
Why?
The theorems 1,2,4 (according to your sequence )are based on theorem 3(according to your sequence)
Thanks for taking the time to comment this but I really don't understand what you're trying to say :(
underrated aff, tysmm i hate this topic
Do you like it now? :D
2 hours b4 the first maths one yess I love maths but circle theorems literally made me cry
8:07 The way I used is slightly simpler.
ACD = CAD = 35º
ADC = 180º - ACD - CAD = 110º
ADB = 90º
BDC = ADC - ADB = 20º
BCF = BDC = 20º
Thanks for sharing, although I am not sure it is really any simpler? There are often many ways to approach circle theorems questions. As long as you're clear it's all good!
In my country we’re studying this at 8th grade, it’s easy but a lot to learn
For anyone interested, here's a video where they prove these theorems:
ua-cam.com/video/CmprPWcLtlk/v-deo.html
i have math paper 4 in less than 12 hrs i hope i understand it and do well
Good luck!
Hello thank you so much. Is isoceles triangle's angle 35°?
Preach 🙌🙌
watching this half an hour before my exam
Im know more in my class with this
5:07 nice