- One of the most important and exam oriented question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
In a triangle ABC, the incircle (centre O) touches BC, CA and AB at P, Q and R respectively.
- And we havd to calculate (i) ∠QOR (ii) ∠QPR given that ∠A = 60°.
- ICSE Avichal publication
Understanding ICSE Mathematics