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

저자: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°.

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The Coordinate Plane (Cartesian Plane)
רישום חופשי
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Parallel Lines and Angles: Thinking Classroom Exploration

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SSS: Exercise 1
FretBoard
BenjaminLee_AngleBisectors
M2_8_8_1_7

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