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Geometry 15 Online
OpenStudy (anonymous):

how can you prove that a triangle is a right triangle?

OpenStudy (anonymous):

If it has a 90 degree angle.

OpenStudy (anonymous):

because there is a 90degree angle in a tringle

OpenStudy (anonymous):

If there is a picture, then it will look like this. |dw:1399436651837:dw|

OpenStudy (anonymous):

|dw:1399436686538:dw|

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