Triangles Class 9 MCQs Questions with Answers

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

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

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

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

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

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

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

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

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

11. 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.

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

13. 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:

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

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

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

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

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

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

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