Triangle Names and Angle Sum (Interior and Exterior)

Autor:Mr James Bowater, Morton Betts

How to name triangles. The conditions for naming triangles. Proof the sum of interior (inside) angles = 180 deg. Proof the other two angles equal exterior angle.

Nuevos recursos

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Isosceles Right Triangle
Marion's Theorem
Probabilities with Two-Way Tables

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Euler's Line
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Activity 1.1: Points, Lines, and Planes
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