This is circle based question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
In this question we have a figure in which ∆ABC is isosceles with AB = AC.
Now we have to prove that the tangent at A to the circumcircle of ∆ABC is parallel to BC.
ICSE Avichal publication
Understanding ICSE Mathematics
Question no 36
Given: ∆ABC is an isosceles triangle with AB = AC.
AT is the tangent to the circumcircle at A.