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The plane surfaces intersect in a ____________ the line of intersection between two curved surfaces is _________ and between a plane surface and curved surfaces is a _________

(a) straight line, curve, curve

(b) straight line, straight line, curve

(c) straight line, curve, straight line

(d) curve, curve, curve

The question was asked in final exam.

My doubt is from Intersection of Surfaces topic in section Development & Intersection of Surfaces of Engineering Drawing

1 Answer

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Correct option is (a) straight line, curve, curve

Explanation: The plane surfaces (faces of prisms and pyramids) intersect in a straight line. The line of intersection between two curved surfaces (of cylinders and cones) or between a plane surface and curved surfaces is a curve.

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