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Technical Drawing  Exam Papers  Higher  1997  Paper 1Question 1GIven the horizontal and vertical projectIons of two planes ABC and DEF. A = 260  5  80 (a) Determine the line of intersection between the planes. (b) Determine the dihedral angle between the planes. (c) Determine the horizontal trace and the vertical trace of a plane which passes through the points B, C and E. (d) On a separate diagram, draw the projections of the skew lines AC and DE and show the projections of the shortest horizontal distance between them. 


