## IntroductiontoTwoColumnProof_Activity.docx - Section 3: Completing a Two-Column Proof

IntroductiontoTwoColumnProof_Activity.docx

# Introduction to Two-Column Proof

Unit 4: Triangles and Congruence
Lesson 3 of 11

## Big Idea: Students use triangle congruence to understand the reasoning behind an old-timer’s method for checking an assembly for ‘squareness’.

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1 teacher likes this lesson
Standards:
Subject(s):
Math, Trigonometry, 10th grade
35 minutes

### Tom Chandler

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