One of the most important and exam oriented question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
We have been given that quadrilateral is circumscribed; we have find the perimeter of quadrilateral .
B) in figure (ii) given below, quadrilateral ABCD is circumscribed and AD ⊥ DC ; we have to find x if radius of incircle is 10 cm.
ICSE Avichal publication
Understanding ICSE Mathematics
Question 7
Solution:
(a) From A, AP and AS are the tangents to the circle
∴AS = AP = 6
From B, BP and BQ are the tangents
∴BQ = BP = 5
From C, CQ and CR are the tangents