bisector of a triangle

作者：Arthur Lee

A line is drawn to pass through the vertex A and cut its opposite side. Drag D to make this line: 1. bisect the angle at A; 2. bisect the side BC; 3. cut BC perpendicularly. Can we make 2 (but not 3) of these conditions true?

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Tangent Line and Chord
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Light
what is sine using an angle
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作圖
面積
參數曲線
Linear Equations
線性規劃或線性最佳化

bisector of a triangle

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