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

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

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

6. 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:

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

8. 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

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

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

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

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

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

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

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

16. 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.

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

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

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

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