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Demonstrate that the angle sum of a triangle is 180° and use this to find the angle sum of a quadrilateral (ACMMG166)
[/fusion_text][fusion_text]LO: To demonstrate that the angle sum of a triangle is 180 degrees.
Know:
- That different types of triangles exist.
- What sides and angles are.
Understand:
- That triangles have a angle sum of 180 degrees.
Do:
- I can find the missing angle of a triangle.
- I can find the angle sum of a quadrilateral.
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Different Types of Triangles
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The internal angles of all triangles always add up to 180 degrees.
It doesn’t matter how small or large the triangle is, the internal angles of the triangle always add up to 180 degrees.
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Teaching Ideas
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Angle Sum Videos
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