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Angles in Segment are Equal – Theorem on Circles

Published: 4 years ago

Category: CBSE, Education, Maths

Tags: , , , ,

Description:

Angles in Segment are Equal – Theorem on Circles

Angles in Segment are Equal – Theorem on Circles CBSE Class IX ICSE Class X Theorem 8 – Equal chords of a circle subtend equal angles at the center by Ankit Mahajan for SuccessCDs Education Channel.

About this Video:

Given : Circle with Centre O

A, B, C, D are points on circle

To Prove : ADB = ACB

Const : Join OA & OB

Proof:

AOB = 2 ADB  (1)  (Theorem)
AOB = 2 ACB   (2)       (-do-)

From 1 & 2

2 ADB = 2 ACB
ADB = ACB

Hence Proved!

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