# Class 9 Mathematics Quiz Chapter 7

## Chapter 7 – Triangles

Play the below Class 9 Mathematics Quiz Chapter 7 – Triangles. These questions are very important for examination. We have provided a quiz from each chapter of class 9 Mathematics NCERT book. Check it on our website.

1. If the angles of a triangle are in the ratio 3:2:1 then the measure of the largest angle is

(A) 60°
(B) 30°
(C) 90°
(D) 180°

2. If the bisectors of the acute angle of a right angle triangle meet at O, then the angle at O between the two bisectors is

(A) 90°
(B) 45°
(C) 60°
(D) 135°

3. If , then is isosceles with

(A) (B) (C) (D) None of these

4. In the given figure, the measure of is, (A) 50°
(B) 40°
(C) 100°
(D) 80°

5. ABC is an isosceles triangle such that AB = AC and AD is the median to the base BC. Then (A) 55°
(B) 70°
(C) 35°
(D) 110°

6. If , then (A) (B) (C) (D) 7. D, E, F are the mid points of the sides BC, CA and AB respectively of . Then is congruent to

(A) (B) (C) (D) 8. ABCD is a parallelogram. If the two diagonals are equal, find the measure of (A) 120°
(B) 60°
(C) 90°
(D) 100°

9. If and AB = 5cm, and , Then which of the following is true

(A) (B) (C) (D) 10. In a , if AB = AC and BC is produced to O such that , then (A) 20°
(B) 40°
(C) 60°
(D) 80°