Very neat! I always love seeing why a theorem is true, and this is a fantastic presentation of the proof. I never learned geometry in much detail because I went to a school with low academic standards in 9th grade. I went on to study calculus in depth in college, and as a physicist, calculus is my true love, but I'd have loved to revisit geometry at some point.I'm sure I'd enjoy a more in-depth geometry course, perhaps even with non-Euclidian geometry. Thanks again for this wonderful presentation!
@@hailoe3467 In the third one, the base angles are equal as shown in the video. The sum of these base angles is the central angle ( exterior angle). So if the base angle is x then , x+x=2x, which is the central angle. And the therorem hence proved by exterior angle theorem.
@@hailoe3467for the last one. We have to take the triangle joined by the red dot on left, the lower left white dot and the pink. Then the exterior angle of this triangle will be the line joined by the white lower left dot pink dot and the red on the right side of the figure. Following the first step as they mentioned with the exterior angle theorem of the triangle that I told you will get the proof.😊
Thankyou cuemath the book has mentioned only 1 case not the other 3 i was getting mad and mad that how could the other 3 cases proved but you always.....😊
Very neat! I always love seeing why a theorem is true, and this is a fantastic presentation of the proof. I never learned geometry in much detail because I went to a school with low academic standards in 9th grade. I went on to study calculus in depth in college, and as a physicist, calculus is my true love, but I'd have loved to revisit geometry at some point.I'm sure I'd enjoy a more in-depth geometry course, perhaps even with non-Euclidian geometry. Thanks again for this wonderful presentation!
beautiful demonstration.
Love you sooo... much cuemath the real math expert.
Merci !! Tres bonne démo !!! Bravo !!
This theorem is in 9th standard Mathematics
In West Bengal state board these are in 9th grade
The third and last one can be easily prove by exterior angle theorem.
Thank you cuemath that your videos actually helped me a lot
can you explain it please?
@@hailoe3467 In the third one, the base angles are equal as shown in the video. The sum of these base angles is the central angle ( exterior angle). So if the base angle is x then , x+x=2x, which is the central angle. And the therorem hence proved by exterior angle theorem.
@@hailoe3467for the last one. We have to take the triangle joined by the red dot on left, the lower left white dot and the pink. Then the exterior angle of this triangle will be the line joined by the white lower left dot pink dot and the red on the right side of the figure. Following the first step as they mentioned with the exterior angle theorem of the triangle that I told you will get the proof.😊
Great. Please what software are you using?
Thankyou cuemath the book has mentioned only 1 case not the other 3 i was getting mad and mad that how could the other 3 cases proved but you always.....😊