Last updated: October 22, 2026 · Written by the Math Made Easy math teachers

Looking for a congruent triangles quiz? Then this Geometry quiz on Proving Triangles Congruent: SSS to HL asks 10 multiple-choice questions with instant feedback. Ten multiple-choice questions check congruence criteria, corresponding parts and CPCTC. Choose the best answer and read the explanations to see the typical mistakes.
Standards: G-CO.B.6, G-CO.B.7, G-CO.B.8, G-SRT.B.5 · Level: Grade 10 Geometry

What this Proving Triangles Congruent: SSS to HL quiz checks
- Congruent triangles have three pairs of congruent sides and three pairs of congruent angles.
- Valid criteria: SSS, SAS, ASA, AAS and HL for right triangles.
- SSA can describe two different triangles, so it does not prove congruence.
- CPCTC lets you conclude that remaining corresponding parts are congruent.
- A shared side is congruent to itself by the Reflexive Property.
The 10 questions of the quiz
- Which criterion proves these triangles congruent?
- Which set of matching parts does NOT prove two triangles congruent?
- In congruent triangles, what can be concluded by CPCTC?
- △ABC ≅ △DEF. Which side is congruent to AC?
- Two right triangles have hypotenuses of 17 and legs of 8. Which criterion proves them congruent?
- Which criterion do the marks show?
- Two triangles share a side. What justifies that this side is congruent to itself?
- △ABC ≅ △DEF, with m∠A = 52° and m∠B = 71°. What is m∠F?
- Two triangles have three pairs of congruent angles. What can be concluded?
- Which statement defines congruent triangles using transformations?
After the quiz
Missed a question? Reread the Proving Triangles Congruent: SSS to HL lesson, then take the quiz again. Next, solve the Geometry worksheet on Proving Triangles Congruent: SSS to HL, one star first, then two and three stars. Finally, take the chapter test under real conditions, without notes and with a timer.
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