Ques 1 Ans - Class 9 Maths Quadrilateral - Revision Assignment Question Answers

Q 1 (i). In the given figure, ABCD and AEFG are two parallelograms. If ∠C = 63°, then measure of ∠A is:

(a.)

57°

(b.)

63°

(c.)

117°

(d.)

123°

Answer. b

Explanation:

Since diagonals of square bisect each other at 90° => ∠AOB = 90° and OA = OB

∴ It is an isosceles right angled triangle.

Option (b) is correct.

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