Triangle Sum Proof (using transversals)

主題：幾何

Use this dynamic activity to explore how you can prove that a the sum of the interior angles of a triangle is 180 degrees, using transversals of parallel lines.

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triunghi echilateral
test
Example 4
Guess the Angle Game
Angle Between Two Planes

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圓錐曲線
對數函數
正三角形
機率
相似三角形

Triangle Sum Proof (using transversals)

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