Triangle Angle Theorems Instruction Active
Proving the Sum of the Interior Angle Measures of a
Triangle Is 180°
Glven: y || 2
Prove: m25 + m2 2 + m26 = 180°
Angles Lines Statements Reasons
21
23
25
26
m21
m23
m25
m26
А
M
1
2 3
Statements
Reasons
4/5
С
6 7
B
Assemble the proof by dragging tiles to
the Statements and Reasons columns.
Intro

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