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Triangle Names and Angle Sum (Interior and Exterior)
Autor:
Morton Betts
Thema:
Gleichseitige Dreiecke
,
Gleichschenklige Dreiecke
,
Rechtwinklige Dreiecke
,
Allgemeine Dreiecke
,
Dreiecke
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.
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