Triangles Class 9 MCQs Questions with Answers

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

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

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

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

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

6. 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

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

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

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

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

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

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

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

14. 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.

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

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

17. 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:

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

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

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