Triangles Class 9 MCQs Questions with Answers

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

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

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

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

5. 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:

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

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

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

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

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

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

12. 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

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

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

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

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

17. 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.

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

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

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