# SEBA Class 10 Mathematics MCQ Chapter 6 Triangle

SEBA Class 10 Mathematics MCQ Chapter 6 Triangle Question Answer in English Medium, Class 10 General Maths Multiple Choice Question Answer in English to each chapter is provided in the list so that you can easily browse throughout different chapters SEBA Class 10 Mathematics MCQ Chapter 6 Triangle Notes and select need one.

## SEBA Class 10 Mathematics MCQ Chapter 6 Triangle

Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. These solutions are part of SCERT All Subject Solutions. Here we have given Assam SEBA Class 10 Mathematics MCQ Chapter 6 Triangle Solutions for All Subject, You can practice these here.

### Triangle

Chapter – 6

1. ∆ ABC is an isosceles triangle in which ∠ C = 90⁰. If AC = 6 cm, then AB= ?

(a) 6 √2 cm.

(b) 6 cm.

(c) 2 √6 cm.

(d) 4 √2 cm.

Ans: (a) 6 √2 cm.

2. D and E are points on the sides AB and AC respectively of a triangle ABC. DEllBC, DB =7.2cm, AE= 1.8cm, EC= 5.4cm. AD is______ .

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(a) 4.8cm.

(b) 3.6cm.

(c) 2.4cm.

(d) 1.2cm.

Ans: (c) 2.4cm.

3. Let ABC be a triangle such that AB = (x-1)cm, AC= 2√x cm, BC = (x+1)cm Then______ .

(a) A = 90°.

(b) B = 90°.

(c) C = 90°.

(d) none of these.

Ans: (a) A = 90°.

4. Let ABC be a triangle such that AB = 6 √3 cm, AC = 12 cm and BC = 6 cm. Angle B is______ .

(a) 120°.

(b) 90°.

(c) 60°

(d) 45°

Ans: (b) 90°.

5. In ∆ ABC ∠ A = 90°, AB = 3cm, BC = 5cm AD ⊥ BC. Then the length of AD is______ .

(a) 5/2.

(b) 12/5.

(c) 5/12.

(d) √39/2.

Ans: (b) 12/5.

6. In the right triangle ABC, ∠ A = 90° and AD ⊥ BC. Then BD/DC_____ .

(a) (AB/AC)2.

(b) AB/AC.

(c) 2 AB/AD.

(d) AB/AD.

Ans: (a) (AB/AC)2.

7. A circles are______ .

(a) Similar.

(b) None of these.

(c) proportional.

(d) congruent.

Ans: (a) Similar.

8. All squares are______ .

(a) Similar.

(b) Proportional.

(c) Not similar.

(d) Congruent.

Ans: (a) Similar.

9. ABC and BDE an two equilateral triangle such that D is the mid-point of BC. Ratio of the areas of triangle ABC and BDE is_____ .

(a) 1:2.

(b) 2:1.

(c) 4:1.

(d) 1:4.

Ans: (c) 4:1.

10. Sides of two similar triangles are in the ratio 4:9. Area of there triangles are in the ratio________ .

(a) 2:3.

(b) 4:9.

(c) 81:16.

(d) 16:81.

Ans: (d) 16:81.

11. In ABC AB = cm AC = 12 cm and BC = 6 cm. The angle B is _______ .

(a) 60°.

(b) 120°.

(c) 90°.

(d) 45°.

Ans: (c) 90°.

12. The sides the triangle are 7 cm, 24 cm and 25 cm. The length of the hypotenuse is_______ .

(a) 25 cm.

(b) 4 cm.

(c) 5 cm.

(d) 7 cm.

Ans: (a) 25 cm.

13. 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______ .

(a) 2.5.

(b) 3.

(c) 5.

(d) 6.

Ans: (d) 6.

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

(a) 8 cm.

(b) 9 cm.

(c) 10 cm.

(d) 12 cm.

Ans: (c) 10 cm.

15. The diagonals of a rhombus are 16 cm and 12 cm, in length. The side of the rhombus in length is______ .

(a) 20 cm.

(b) 8 cm.

(c) 10 cm.

(d) 9 cm.

Ans: (c) 10 cm.

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

(a) 230 sq.cm.

(b) 106 sq.cm.

(c) 107 sq.cm.

(d) 108 sq.cm.

Ans: (d) 108 sq.cm.

17. 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_______ .

(a) 30 cm.

(b) 40 cm.

(c) 50 cm.

(d) 60 cm.

Ans: (a) 30 cm.

18. 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 ABC is________ .

(a) 22 cm.

(b) 20 cm.

(c) 21 cm.

(d) 18 cm.

Ans: (d) 18 cm.

19. In a square of side 10 cm, its diagonal = _______ .

(a) 15 cm.

(b) 10√2 cm.

(c) 20 cm.

(d) 12 cm.

Ans: (b) 10√2 cm.

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

(a) ∠A=∠F

(b) ∠B=∠D

(c) ∠A=∠D

(d) ∠B=∠E

Answer: (b) ∠B=∠D.

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