Welcome to your Triangles MCQs Mock Test of 10th Class Mathematics

1.
1. D and E are respectively the points on the sides AB and AC of a triangle ABC such that AD = 2 cm, BD = 3 cm, BC = 7.5 cm and DE || BC. Then, length of DE (in cm) is

2.
2. Which of the following triangles have the same side lengths?

3.
3. Area of an equilateral triangle with side length a is equal to:

4.
4. If ΔABC ~ ΔDEF and ΔABC is not similar to ΔDEF then which of the following is not true?

5.
5. D and E are the midpoints of side AB and AC of a triangle ABC, respectively and BC = 6 cm. If DE || BC, then the length (in cm) of DE is:

6.
6. If ΔABC ~ ΔPQR, BCQR=13 then Undefined control sequence \operatorname is

7.
7. The diagonals of a rhombus are 16 cm and 12 cm, in length. The side of rhombus in length is

8.
8. If ΔABC ~ ΔQRP, Undefined control sequence \operatorname, AB = 18 cm and BC = 15 cm, then PR is equal to

9.
9. Corresponding sides of two similar triangles are in the ratio of 2:3. If the area of small triangle is 48 sq.cm, then the area of large triangle is:

10.
10. If perimeter of a triangle is 100 cm and the length of two sides are 30 cm and 40 cm, the length of third side will be:

11.
11. If triangles ABC and DEF are similar and AB=4 cm, DE=6 cm, EF=9 cm and FD=12 cm, the perimeter of triangle is:

12.
12. If in triangles ABC and DEF,ABDE=BCFD , then they will be similar, if

13.
13. The height of an equilateral triangle of side 5 cm is:

14.
14. If ABC and DEF are two triangles and AB/DE=BC/FD, then the two triangles are similar if

15.
15. Sides of two similar triangles are in the ratio 4: 9. Areas of these triangles are in the ratio

16.
16. Which of the following are not similar figures?

17.
17. In triangle ABC, ∠BAC = 90° and AD ⊥ BC. Then

18.
18. If in two triangles ABC and PQR, AB/QR = BC/PR = CA/PQ, then

19.
19. In triangles ABC and DEF, ∠B = ∠E, ∠F = ∠C and AB = 3 DE. Then, the two triangles are

20.
20. It is given that ΔABC ~ ΔPQR, with BC/QR = 1/4 then, ar(ΔPRQ)/ar(ABC) is equal to

21.
21. It is given that ΔABC ~ ΔDFE, ∠A = 30°, ∠C = 50°, AB = 5 cm, AC = 8 cm and DF = 7.5 cm. Then, the following is true:

22.
22. If triangle ABC is similar to triangle DEF, then

23.
23. Which of the following is not a similarity criterion for two triangles?

24.
24. The ratio of the areas of two similar triangles is equal to

25.
25. In ∆ABC, AB = 6√3 cm, AC = 12 cm and BC = 6 cm. The angle B is

26.
26. Values of k for which the quadratic equation 2x² – kx + k = 0 has equal roots is

27.
27. (x² + 1)² – x² = 0 has

28.
28. In a rectangle Length = 8 cm, Breadth = 6 cm. Then its diagonal = …

29.
29. In a rhombus if d1 = 16 cm, d2 = 12 cm, its area will be…

30.
30. If in two As ABC and DEF, ABDF= BCFE = CAED then

31.
31. D and E are respectively the points on the sides AB and AC of a triangle ABC such that AD = 2 cm, BD = 3 cm, BC = 7.5 cm and DE || BC. Then, length of DE (in cm) is

32.
32. In ABC, DE || AB. If CD = 3 cm, EC = 4 cm, BE = 6 cm, then DA is equal to

33.
33. If ΔABC ~ ΔDEF and ΔABC is not similar to ΔDEF then which of the following is not true?

34.
34. O is a point on side PQ of a APQR such that PO = QO = RO, then

35.
35. If in triangles ABC and DEF, ABDE= BCFD, then they will be similar, if

36.
36. Which of the following equations has 2 as a root?

37.
37. The rooks of the equation x2 +7x + 10 = 0 are:

38.
38. The quadratic equation 2x2– 5x+1 = 0 has

39.
39. In a square of side 10 cm, its diagonal = …

40.
40. In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is

41.
41. O is a point on side PQ of a APQR such that PO = QO = RO, then

42.
42. In ABC, DE || AB. If CD = 3 cm, EC = 4 cm, BE = 6 cm, then DA is equal to

43.
43. In a square of side 10 cm, its diagonal = …

44.
44. In a rectangle Length = 8 cm, Breadth = 6 cm. Then its diagonal = …

45.
45. In a rhombus if d1 = 16 cm, d2 = 12 cm, its area will be…

46.
46. In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is

47.
47. If in two As ABC and DEF, ABDF=BCFE=CAED, then

48.
48. It is given that ∆ABC ~ ∆DEF and BCEF=15. Then Undefined control sequence \operatorname is equal to

49.
49. In ∠BAC = 90° and AD ⊥ BC. A Then