Chapter Exam

Chapter 7 MATHS : Triangles — Online MCQ Test

Q: Which of the following is a criterion for triangle congruence?

Answer: B. SAS — SAS is a valid congruence criterion. AAA gives only similarity, not congruence.

Q: In the RHS congruence rule, the 'R' stands for:

Answer: B. Right angle — RHS stands for Right angle-Hypotenuse-Side, used only for right triangles.

Q: In two triangles, if two angles and the included side of one triangle are equal to two angles and the included side of another triangle, then the triangles are congruent by:

Answer: A. ASA — ASA congruence uses two angles and the included side to prove triangles congruent.

Q: Two triangles have AB = PQ, BC = QR, and AC = PR. Which conclusion is correct?

Answer: B. They are congruent by SSS — All three corresponding sides are equal, so the triangles are congruent by SSS.

Q: If two triangles are congruent and one angle of the first triangle is 35°, which of the following is always true for the corresponding angle in the second triangle?

Answer: B. It is 35° — Corresponding parts of congruent triangles are equal. So the matching angle must also be 35°.

MATHS · CLASS 9th · Andhra State Board

Practice Chapter 7 MATHS : Triangles with a free chapter-wise online MCQ test for Andhra State Board CLASS 9th MATHS. This chapter covers: This chapter covers congruence criteria SAS ASA SSS RHS triangle properties isosceles triangle theorems and geometric proofs.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 7 MATHS : Triangles — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 9th MATHS — Chapter 7 MATHS : Triangles, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a criterion for triangle congruence?

A. AAA
B. SAS ✓
C. SSA
D. AAS only

Answer: B. SAS
SAS is a valid congruence criterion. AAA gives only similarity, not congruence.

In the RHS congruence rule, the 'R' stands for:

A. Radius
B. Right angle ✓
C. Rectangle
D. Remaining side

Answer: B. Right angle
RHS stands for Right angle-Hypotenuse-Side, used only for right triangles.

In two triangles, if two angles and the included side of one triangle are equal to two angles and the included side of another triangle, then the triangles are congruent by:

A. ASA ✓
B. SSS
C. SAS
D. AAA

Answer: A. ASA
ASA congruence uses two angles and the included side to prove triangles congruent.

Two triangles have AB = PQ, BC = QR, and AC = PR. Which conclusion is correct?

A. They are congruent by SAS
B. They are congruent by SSS ✓
C. They are congruent by ASA
D. They are not congruent

Answer: B. They are congruent by SSS
All three corresponding sides are equal, so the triangles are congruent by SSS.

If two triangles are congruent and one angle of the first triangle is 35°, which of the following is always true for the corresponding angle in the second triangle?