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Mathematics 21 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

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OpenStudy (anonymous):

I tried to draw that but then.. idk the next step anymore

Directrix (directrix):

I think you need to use this theorem twice: Triangle Angle Bisector Theorem: If a ray bisects an angle of a triangle, then it divides the opposite side into segments that are proportional to the sides that formed the angle. |dw:1384430307170:dw|

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