This is circle based question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
By using properties of circle we have to Prove that a cyclic parallelogram is a rectangle.
And also that a cyclic rhombus is a square.
ICSE Avichal publication
Understanding ICSE Mathematics
Question no 15
Solution:
![ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q15.1](https://www.learninsta.com/wp-content/uploads/2018/08/ML-Aggarwal-Class-10-Solutions-for-ICSE-Maths-Chapter-15-Circles-Ex-15.2-Q15.1.png)
![ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q15.2](https://www.learninsta.com/wp-content/uploads/2018/08/ML-Aggarwal-Class-10-Solutions-for-ICSE-Maths-Chapter-15-Circles-Ex-15.2-Q15.2.png)
![ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.2 Q15.3](https://www.learninsta.com/wp-content/uploads/2018/08/ML-Aggarwal-Class-10-Solutions-for-ICSE-Maths-Chapter-15-Circles-Ex-15.2-Q15.3.png)
(a) ABCD is a cyclic parallelogram.
To prove: ABCD is a rectangle
Proof: ABCD is a parallelogram
∠A = ∠C and ∠B = ∠D