Technical Drawing - Exam Papers - Higher - 1993 - Paper 1

Question 1

Given the horizontal and vertical projections of two planes ABC and ADE.

A = 185 - 95 - 20
B = 170 - 5 - 55
C = 250 - 20 - 65
D = 175 - 55 - 90
E = 230 - 25 - 30

(a) Determine the line of intersection between the planes.

(b) Determine the dihedral angle between the planes.

(c) Find the angle between the lines AB and AE.

(d) On a separate diagram, draw the projections of the skew lines BC and DE and show the projections of the shortest distance between them.