Angle Sum of Triangles
Proving that the sum of the angles in a triangle is 180 degrees and applying this to solve problems.
Key Questions
- Justify why the sum of the interior angles of any triangle always equals 180 degrees.
- Analyze the relationship between an exterior angle of a triangle and its remote interior angles.
- Predict unknown angle measures within triangles using the angle sum theorem.
Ontario Curriculum Expectations
Suggested Methodologies
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Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
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