Question Paper
Class / Subject: Class 9 (SSC) · Mathematics - Geometry (भूमिती)
Chapter: Chapter 3 — Chapter 3: Triangles
Time Allowed: 32 minutes
Max Marks: 16
1. What is the sum of a triangle's interior angles? [1]
(A) 180°
(B) 90°
(C) 360°
(D) 270°
2. What does the exterior angle theorem state? [1]
(A) Exterior angle = sum of two non-adjacent interior angles
(B) Exterior angle = interior angle
(C) Exterior angle = 90° always
(D) No specific relationship
3. What does the triangle inequality theorem state? [1]
(A) Sum of two sides > third side
(B) Sum of two sides < third side
(C) All sides must be equal
(D) No specific relationship
4. What are congruent triangles? [1]
(A) Triangles with all corresponding parts equal
(B) Triangles with different sizes
(C) Triangles with no relationship
(D) Triangles with only equal angles
5. What is a congruence criterion? [1]
(A) SSS (side-side-side)
(B) Only angle measurement
(C) Only area comparison
(D) Only perimeter comparison
6. What is another congruence criterion? [1]
(A) SAS (side-angle-side)
(B) Only SSS
(C) Only ASA
(D) None exist
7. Can a triangle have sides 2, 3, and 6? [1]
(A) No, violates triangle inequality
(B) Yes, always valid
(C) Only sometimes
(D) Cannot be determined
8. Why learn about triangle properties? [1]
(A) Essential for geometry problem-solving
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is the sum of a triangle's interior angles? [1]
(A) 180°
(B) 90°
(C) 360°
(D) 270°
10. What does the exterior angle theorem state? [1]
(A) Exterior angle = sum of two non-adjacent interior angles
(B) Exterior angle = interior angle
(C) Exterior angle = 90° always
(D) No specific relationship
11. What does the triangle inequality theorem state? [1]
(A) Sum of two sides > third side
(B) Sum of two sides < third side
(C) All sides must be equal
(D) No specific relationship
12. What are congruent triangles? [1]
(A) Triangles with all corresponding parts equal
(B) Triangles with different sizes
(C) Triangles with no relationship
(D) Triangles with only equal angles
13. What is a congruence criterion? [1]
(A) SSS (side-side-side)
(B) Only angle measurement
(C) Only area comparison
(D) Only perimeter comparison
14. What is another congruence criterion? [1]
(A) SAS (side-angle-side)
(B) Only SSS
(C) Only ASA
(D) None exist
15. Can a triangle have sides 2, 3, and 6? [1]
(A) No, violates triangle inequality
(B) Yes, always valid
(C) Only sometimes
(D) Cannot be determined
16. Why learn about triangle properties? [1]
(A) Essential for geometry problem-solving
(B) No reason
(C) It's not useful
(D) Only for tests