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GeoGebra
Angles in a triangle add up to 180°
Author:
John Tranter
Drag the points to see how the angles change.
Angles in a triangle add up to 180°
Discover Resources
Example 2
Desai_5a_Final
Geometric Proof of Rotation of a Point
Angle measures
Integral Test for Series
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Lines in a Triangle
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Pursuit Paths via Complex Numbers
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Triangle to Square Puzzle
