Description : NCERT Solutions for class 9 Maths Chapter 10 Circles Exercise 10.5 -Maths 9th
Last Answer : 1. In the figure, A, B and C are three points on a circle with centre O such that ∠ BOC = 30º and ∠AOB = 60°. If D is a point on the circle other than the arc ABC, find ∠ADC. We have a ... = 90º Similarly, ∠B= ∠D = 90º ⇒ Each angle of the parallelogram ABCD is of 90º. Thus, ABCD is a rectangle.