Triangle Postulates
Authored by Sylvia Paredes
Mathematics
9th - 12th Grade
CCSS covered
Used 1K+ times
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About
This quiz focuses on triangle congruence postulates and theorems, specifically targeting high school geometry concepts appropriate for grades 9-10. Students must demonstrate mastery of the five valid triangle congruence criteria: SSS (Side-Side-Side), SAS (Side-Angle-Side), ASA (Angle-Side-Angle), AAS (Angle-Angle-Side), and HL (Hypotenuse-Leg for right triangles). The questions require students to analyze given triangle diagrams and determine which postulate proves congruence, write proper congruence statements with corresponding vertices in correct order, and apply CPCTC (Corresponding Parts of Congruent Triangles are Congruent) reasoning. Students need solid understanding of triangle angle sum properties, the ability to distinguish between included and non-included sides and angles, and recognition of invalid congruence attempts like SSA and AAA. The quiz also incorporates basic angle measurement skills and connects geometric transformations to congruence proofs. Created by Sylvia Paredes, a Mathematics teacher in the US who teaches grades 9-12. This assessment serves as an excellent formative evaluation tool for students working through their first formal introduction to geometric proof concepts. Teachers can deploy this quiz as a warm-up activity to gauge student readiness before launching into two-column proofs, or as homework practice to reinforce lesson concepts after initial instruction on triangle congruence. The varied question formats make it ideal for review sessions before unit tests, helping students solidify their understanding of when triangles are congruent versus when insufficient information exists. This quiz effectively supports Common Core standards G-CO.7 (using congruence criteria to solve problems) and G-CO.8 (explaining congruence in terms of rigid motions), while building the foundational reasoning skills students need for more advanced proof-writing in geometry.
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20 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Congruent by
Tags
CCSS.HSG.SRT.B.5
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Name the postulate, if possible, that makes the triangles congruent.
Tags
CCSS.HSG.SRT.B.5
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Name the postulate, if possible, that makes the triangles congruent.
Tags
CCSS.HSG.SRT.B.5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How are these two triangles congruent?
Tags
CCSS.HSG.SRT.B.5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How are these two triangles congruent?
Tags
CCSS.HSG.SRT.B.5
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Name the postulate, if possible, that makes the triangles congruent.
Tags
CCSS.HSG.SRT.B.5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the correct congruence statement for these congruent triangles?
Tags
CCSS.HSG.CO.B.7
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