Triangles Class 9 MCQs Questions with Answers

1. For two triangles, if two angles and the included side of one triangle are equal to two angles and the included side of another triangle. Then the congruency rule is:

2. It is given that ΔABC = ΔFDE and AB = 5 cm, ∠B = 40° and ∠A = 80°. Then which of the following is true?

3. In figure X is a point in the interior of square ABCD, AXYZ is also a square. If DY = 3 cm and AZ = 2 cm, then find BY.

4. In ΔABC, ∠C = ∠A and BC = 4 cm and AC = 5 cm, then find length of AB.

5. In triangle ABC, if AB=BC and ∠B = 70°, ∠A will be:

6. In figure AB ⊥ AE, BC ⊥ AB, CE = DE and ∠AED = 120°, then find ∠ECD.

7. In given figure, the measure of ∠BAC is

8. In figure AB ⊥ BE and EF ⊥ BE. If BC = DE and AB = EF, then ΔABD is congruent to

9. In ΔABC, AB = AC and ∠B = 50°, then find ∠C.

10. In figure if AE || DC and AB = AC, find the value of ∠ABD.

11. D is a point on the side BC of a ΔABC such that AD bisects ∠BAC. Then

12. In triangles ABC and PQR, AB = AC, ∠C = ∠P and ∠B = ∠Q. The two triangles are

13. If ABC and DBC are two isosceles triangles on the same base BC. Then:

14. A triangle in which two sides are equal is called:

15. ABC is an isosceles triangle in which altitudes BE and CF are drawn to equal sides AC and AB, respectively. Then:

16. The angles opposite to equal sides of a triangle are:

17. In a right triangle, the longest side is:

18. Two sides of a triangle are of lengths 5 cm and 1.5 cm. The length of the third side of the triangle cannot be

19. In triangles ABC and DEF, AB = FD and ∠A = ∠D. The two triangles will be congruent by SAS axiom if

20. In ∆ PQR, ∠R = ∠P and QR = 4 cm and PR = 5 cm. Then the length of PQ is