Free PDF Download of CBSE Class 10 Maths Chapter 6 Triangles Multiple Choice Questions with Answers. MCQ Questions for Class 10 Maths with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Maths Triangles MCQs with Answers to know their preparation level.

## Class 10 Maths MCQs Chapter 6 Triangles

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

(a) RS² = PR × QR

(b) PR² + QR² = PQ²

(c) QR² = QO² + RO²

(d) PO² + RO² = PR²

**Answer**

Answer: b

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

(a) 7.5 cm

(b) 3 cm

(c) 4.5 cm

(d) 6 cm

**Answer**

Answer: c

3. AABC is an equilateral A of side a. Its area will be…

**Answer**

Answer: a

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

(a) 15 cm

(b) 10√2 cm

(c) 20 cm

(d) 12 cm

**Answer**

Answer: b

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

(a) 9 cm

(b) 14 cm

(c) 10 cm

(d) 12 cm

**Answer**

Answer: c

6. In a rhombus if d_{1} = 16 cm, d_{2} = 12 cm, its area will be…

(a) 16 × 12 cm²

(b) 96 cm²

(c) 8 × 6 cm²

(d) 144 cm²

**Answer**

Answer: b

7. In a rhombus if d_{1} = 16 cm, d_{2} = 12 cm, then the length of the side of the rhombus is

(a) 8 cm

(b) 9 cm

(c) 10 cm

(d) 12 cm

**Answer**

Answer: c

8. If in two As ABC and DEF, (frac{mathrm{AB}}{mathrm{DF}}=frac{mathrm{BC}}{mathrm{FE}}=frac{mathrm{CA}}{mathrm{ED}}), then

(a) ∆ABC ~ ∆DEF

(b) ∆ABC ~ ∆EDF

(c) ∆ABC ~ ∆EFD

(d) ∆ABC ~ ∆DFE

**Answer**

Answer: d

9. It is given that ∆ABC ~ ∆DEF and (frac{mathrm{BC}}{mathrm{EF}}=frac{1}{5}). Then (frac{operatorname{ar}(D E F)}{operatorname{ar}(A B C)}) is equal to

(а) 5

(b) 25

(c) (frac{1}{25})

(d) (frac{1}{5})

**Answer**

Answer: b

10. In ∠BAC = 90° and AD ⊥ BC. A Then

(а) BD.CD = BC²

(б) AB.AC = BC²

(c) BD.CD = AD²

(d) AB.AC = AD²

**Answer**

Answer: c

11. 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

**Answer**

Answer: b

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

(a) BC.EF = AC.FD

(b) AB.ED = AC.DE

(c) BC.DE = AB.EE

(d) BC.DE = AB.FD

**Answer**

Answer: c

13. If in two triangles DEF and PQR, ZD = ZQ and ZR = ZE, then which of the following is not true?

**Answer**

Answer: b

14. If ΔABC ~ ΔPQR, (frac{mathrm{BC}}{mathrm{QR}}=frac{1}{3}) then (frac{operatorname{ar}(PQR)}{operatorname{ar}(BCA)}) is

(a) 9

(b) 3

(c) 1/3

(d) 1/9

**Answer**

Answer: a

15. If ΔABC ~ ΔQRP, (frac{operatorname{ar}(mathrm{ABC})}{operatorname{ar}(mathrm{PQR})}=frac{9}{4}), AB = 18 cm and BC = 15 cm, then PR is equal to

(a) 10 cm

(b) 12 cm

(c) (frac{20}{3})cm

(d) 8 cm

**Answer**

Answer: a

16. If in triangles ABC and DEF,(frac{mathrm{AB}}{mathrm{DE}}=frac{mathrm{BC}}{mathrm{FD}}) , then they will be similar, if

(a) ∠B = ∠E

(b) ∠A = ∠D

(c) ∠B = ∠D

(d) ∠A = ∠F

**Answer**

Answer: c

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