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:
(a) ABCD is a cyclic parallelogram.
To prove: ABCD is a rectangle
Proof: ABCD is a parallelogram
∠A = ∠C and ∠B = ∠D