Congruent Triangles Proof Practice
9th - 10th Grade
•16 Qs
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Congruent Triangles Proof Practice
Quiz
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Medium
Standards-aligned
Michelle Wise
Used 2K+ times
FREE Resource
About this resource
This quiz focuses on congruent triangles and geometric proofs, specifically targeting the systematic approach to proving triangle congruence through formal two-column proofs. Designed for high school geometry students at the 9th-10th grade level, the content requires students to demonstrate mastery of congruence postulates (SAS, ASA, AAS, SSS), fundamental geometric properties (reflexive property, vertical angles theorem), and the logical structure of mathematical proofs. Students must identify appropriate statements and reasons for each step in a proof sequence, recognize when triangles are congruent based on given information, and apply properties such as the definition of midpoint and vertical angles theorem. The quiz demands both procedural fluency in applying congruence theorems and conceptual understanding of how geometric relationships support logical conclusions in formal mathematical arguments. Created by Michelle Wise, a Mathematics teacher in US who teaches grade 9-10. This comprehensive assessment tool serves multiple instructional purposes, from formative assessment during initial proof instruction to summative evaluation of student mastery. Teachers can deploy this quiz as a warm-up activity to activate prior knowledge before introducing new proof techniques, assign it as homework to reinforce classroom learning, or use it for review sessions before unit examinations. The varied question formats allow educators to identify specific areas where students struggle—whether in recognizing congruence patterns, applying appropriate theorems, or understanding the logical flow of proof construction. This quiz aligns with Common Core State Standards G.CO.8 (explaining criteria for triangle congruence) and G.CO.10 (proving geometric theorems), providing targeted practice that builds the analytical reasoning skills essential for advanced geometric thinking.
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16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the "statement" for step 2 of the proof?
Tags
CCSS.HSG.SRT.B.5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the "statement" for step 3 of the proof?
Tags
CCSS.HSG.SRT.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the "statement" for step 3 of the proof?
Tags
CCSS.HSG.SRT.B.5
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the "reason" for step 2 of the proof?
≅ thrm
Tags
CCSS.HSG.SRT.B.5
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the "statement " for step 3 of the proof?
≅ thrm
Tags
CCSS.HSG.SRT.B.5
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the "reason" for step 4 of the proof?
Tags
CCSS.HSG.SRT.B.5
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the "reason" for step 3 of the proof?
Tags
CCSS.HSG.SRT.B.5
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