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Question 7. (a) In figure (i) given below, quadrilateral ABCD is circumscribed; find the perimeter of quadrilateral ABCD. (b) In figure (ii) given below, quadrilateral ABCD is circumscribed and AD ⊥ DC ; find x if radius of incircle is 10 cm.

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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

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  1. 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
    ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.3 Q7.2
    ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.3 Q7.3
    ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.3 Q7.4

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