Question Paper
Class / Subject: Class 10 (ICSE) · Mathematics
Chapter: Chapter 15 — Chapter 15: Similarity
Time Allowed: 32 minutes
Max Marks: 16
1. What defines similar triangles? [1]
(A) Equal angles and proportional sides
(B) Equal sides only
(C) Equal angles only, without proportional sides
(D) No specific relationship
2. What is AA similarity? [1]
(A) Two equal corresponding angles
(B) Three equal sides
(C) One equal side
(D) No specific rule
3. What is SSS similarity? [1]
(A) Proportional corresponding sides
(B) Equal angles only
(C) One equal side
(D) No specific rule
4. What does the Basic Proportionality Theorem state? [1]
(A) A parallel line divides two sides proportionally
(B) All triangles are similar
(C) No relationship exists
(D) Only right triangles apply
5. What is another name for this theorem? [1]
(A) Thales' theorem
(B) Pythagoras' theorem
(C) Euclid's theorem
(D) Newton's theorem
6. How do areas of similar triangles relate? [1]
(A) Ratio of areas = square of ratio of sides
(B) Areas are always equal
(C) No relationship exists
(D) Areas are unrelated to sides
7. What can similarity help solve? [1]
(A) Scale models and indirect measurement
(B) Only abstract theory
(C) Nothing practical
(D) Only unrelated problems
8. Why learn about similarity? [1]
(A) To solve real-life measurement and modelling problems
(B) No reason
(C) It's not useful
(D) Only for tests
9. What defines similar triangles? [1]
(A) Equal angles and proportional sides
(B) Equal sides only
(C) Equal angles only, without proportional sides
(D) No specific relationship
10. What is AA similarity? [1]
(A) Two equal corresponding angles
(B) Three equal sides
(C) One equal side
(D) No specific rule
11. What is SSS similarity? [1]
(A) Proportional corresponding sides
(B) Equal angles only
(C) One equal side
(D) No specific rule
12. What does the Basic Proportionality Theorem state? [1]
(A) A parallel line divides two sides proportionally
(B) All triangles are similar
(C) No relationship exists
(D) Only right triangles apply
13. What is another name for this theorem? [1]
(A) Thales' theorem
(B) Pythagoras' theorem
(C) Euclid's theorem
(D) Newton's theorem
14. How do areas of similar triangles relate? [1]
(A) Ratio of areas = square of ratio of sides
(B) Areas are always equal
(C) No relationship exists
(D) Areas are unrelated to sides
15. What can similarity help solve? [1]
(A) Scale models and indirect measurement
(B) Only abstract theory
(C) Nothing practical
(D) Only unrelated problems
16. Why learn about similarity? [1]
(A) To solve real-life measurement and modelling problems
(B) No reason
(C) It's not useful
(D) Only for tests