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OpenStudy (anonymous):
the base of an isosceles triangle, 32 cm in length lies in plane P. the plane containing the triangle forms a dihedral angle 45 degrees with plane P. If each of the congruent sides of the triangle measures 20 cm, find the distance from the third vertex to plane P and the length of the projection of the perimeter of the triangle on the plane.
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OpenStudy (anonymous):
|dw:1392565144995:dw|
OpenStudy (anonymous):
perimeter of projection=20+x+x
OpenStudy (anonymous):
thanks a lot! :)
OpenStudy (anonymous):
correction perimeter=32+x+x
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