Question

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.

Answer 1

perimeter of projection=20+x+x

Answer 2

thanks a lot! :)

Answer 3

correction perimeter=32+x+x