Question Paper
Class / Subject: Class 10 (CBSE) · Mathematics
Chapter: Chapter 6 — Chapter 6: Triangles
Time Allowed: 15 minutes
Max Marks: 6
1. Two triangles are similar if their: [1]
(A) corresponding angles are equal
(B) all sides are equal
(C) only one angle matches
(D) perimeters are equal
2. The AA criterion for similarity requires: [1]
(A) two pairs of corresponding angles equal
(B) all three sides proportional
(C) all three angles measured exactly
(D) only one angle known
3. Similar triangles are used in real life for: [1]
(A) indirect height measurement using shadows
(B) only theoretical geometry problems
(C) proving congruence only
(D) calculating area only
4. If a triangle's sides satisfy a²+b²=c², the triangle is: [1]
(A) right-angled
(B) equilateral
(C) isosceles only
(D) obtuse
5. Verify if a triangle with sides 6,8,10 is a right triangle: 6²+8²=36+64=100=10². This confirms it is: [1]
(A) a right triangle
(B) not a right triangle
(C) an equilateral triangle
(D) undetermined
6. In a verified right triangle using the converse, the right angle is located: [1]
(A) opposite the longest side
(B) opposite the shortest side
(C) at a random vertex
(D) between the two shorter sides always at 45°