Descriptive Geometry
Assignment A4 2020/21/1

Given a square-based oblique prism ABCDA_xB_xC_xD_x whose bases ABCD and A_xB_xC_xD_x lie on 1^st principle planes (on horizontal planes), furthermore, given a triangle 123. Construct the intersection of the prism and the triangle. Show visibility assuming that the prism and the triangle are made from plate, and the covering face A_xB_xC_xD_x is removed. A(45, 65, 155); C(105, 85, 155); A_x(5, 65, 235); 1(15, 25, 190); 2(120, 85, 175); 3(30, 110, 245).