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Technical Drawing  Exam Papers  Higher  1992  Paper 1Question 1Given the horizontal and vertical projections of two planes ABCD and ABE. A = 285  50  85 (a) Determine the dihedral angle between the planes. (b) Determine the position of a point P on the plane ABCD which shall be at a distance of 35mm from the horizontal plane and 75 mm from the vertical plane Join EP and determine the inclination of EP to the plane ABCD. (c) On a separate diagram, draw the projections of the skew lines AE and BC and show the projections of the shortest horizontal distance between them. 


