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The angles of a triangle always sum to 180 degrees.
Author:
Andrea Siwik
GeoGebra
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Reflection = 180° Rotation about a Line
Reflection Across 2 Parallel Lines
Circle Passing Through 3 Points
Pitfalls of Disk/Washer Method
အခြေခံ data အခေါ်အဝေါ်များ
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Alternate Interior angles
Form 4 Chapter 11 - Thm 9, 10 Angle in Alt. Seg.
Dilation and Reflection (Degrees)
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