Using dilation to show the sum of the angles in a triangle

Autor:Duane Habecker

We all know that a half-circle has 180°. Watch the angles of this triangle move together to form a half circle. This is a demonstration that the sum of the angles in a triangle is 180°.

Nuevos recursos

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Intersections of y=a^x and y=log(a, x)
दुई-ओटा समुहको संयोजन (Union of two sets)
bewijs stelling van Pythagoras
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Coordinate Plane Introduction
nene kouyate b1 transformation
Apollonius_LLL
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Probabilidad Condicional
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