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Technical Drawing  Exam Papers  Higher  1999  Paper 1Question 1Given the horizontal and vertical projections of two planes ABC and ADE. A = 190  90  5 (a) Determine the line of intersection between the planes. (b) Determine the dihedral angle between the planes. (c) Show the projections of a horizontal line drawn from D, which is 40 mm long and is inclined at 60° to the line AD. (d) On a separate diagram, draw the projections of the skew lines AC and DE and show the projections of the shortest distance between them. 


