Geometry quiz: Triangle congruence & proofs

Print quiz + answer key

Paste the quiz and answer key the AI gives you, check it, then print. It prints black on white with no menus or buttons, and the answer key starts on its own page when the AI uses the "ANSWER KEY" heading.

Print quiz + answer key

What this quiz should check

Topic: Triangle congruence criteria and proofs (G-CO.B.8, G-SRT.B.5). A good Geometry quiz on this asks students to:

• Decide whether two triangles are congruent using SSS, SAS, ASA or AAS
• Explain why SSA and AAA do not guarantee congruence
• Write a two-column or paragraph proof that two triangles are congruent
• Use CPCTC to prove that segments or angles are congruent

Misconceptions worth a question

• Matching vertices in the wrong order in a congruence statement
• Using SSA as if it were a valid criterion
• Leaving out a reason, such as the reflexive property for a shared side

Teacher tip: Give a proof with the statements filled in and the reasons blank. It checks reasoning without a blank page.

Always check the AI's answer key before you give the quiz to students.

Teach it first

Plan the lesson on the same standard: objective, practice, differentiation and an exit ticket.

Geometry Triangle congruence & proofs lesson plan prompt →