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Technical Drawing  Exam Papers  Higher  1993  Paper 1Question 1Given the horizontal and vertical projections of two planes ABC and ADE. A
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20 (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. 


