Class 10 Maths Chapter 7 Triangles Most Important Questions By PW

Class 10 Maths Chapter 7 Triangles Most Important Questions By Physics Wallah is not just a revision set, it’s a comprehensive and well-curated way to help you handle one of the most scoring yet tricky chapters —Triangles with clarity. Instead of going through everything, you directly practice the questions that matter most in exams. 

This helps you strengthen concepts like similarity and congruence while improving how quickly and accurately you solve problems under exam pressure. With consistent practice, you build stronger conceptual clarity and board exam-ready confidence for better performance.

Q1. If ΔABC ~ ΔEDF, then which of the following is not true?

A) BC · EF = AC · FD
B) AB · EF = AC · DE
C) BC · DE = AB · EF
D) BC · DE = AB · FD

Correct option: C) BC · DE = AB · EF

Q2. If in ΔABC and ΔEDF, AB/DE = BC/FD, then they will be similar, when

A) ∠B = ∠E
B) ∠A = ∠D
C) ∠B = ∠D
D) ∠A = ∠F

Correct option: C) ∠B = ∠D

Q3. If in two triangles ABC and PQR, then
AB/QR = BC/PR = CA/PQ:

A) ΔPQR ~ ΔCAB
B) ΔPQR ~ ΔABC
C) ΔCBA ~ ΔPQR
D) ΔBCA ~ ΔPQR

Correct option: A) ΔPQR ~ ΔCAB

Q4. In ΔABC and ΔEDF, if AB/DE = BC/FD, then they will be similar when:

A) ∠B = ∠E
B) ∠A = ∠D
C) ∠B = ∠D
D) ∠A = ∠F

Correct option: C) ∠B = ∠D

Q5. In ΔPQR ~ ΔABC, PQ = 6 cm, AB = 8 cm, and the perimeter of ΔABC is 36 cm, then the perimeter of ΔPQR is:

A) 20.25 cm
B) 27 cm
C) 48 cm
D) 64 cm

Correct option: B) 27 cm

 For more MIQs with step-by-step solutions and explanations: 

Class 10 Maths Chapter 7 Triangles Most Important Questions By PW gives you a smart way to revise without wasting time on unnecessary questions. With regular practice, theorems, similarity rules, and congruence concepts start to feel more natural and less confusing. Instead of last-minute stress, you build steady confidence step by step.