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A point is 8 units away from the vertical plane and 12 units away from profile plane and 9 units away from horizontal plane in 3rd quadrant then the projections are drawn on paper the distance between the side view and front view of point is _____________

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A point is 8 units away from the vertical plane and 12 units away from profile plane and 9 units away from horizontal plane in 3rd quadrant then the projections are drawn on paper the distance between the side view and front view of point is _____________

(a) 29 units

(b) 20 units

(c) 21 units

(d) 17 units

This question was addressed to me in final exam.

This interesting question is from Projection of Points in Third Quadrant topic in chapter Projection of Points of Engineering Drawing

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The correct choice is (c) 21 units

Easy explanation: Since the point is 12 units away from the profile plane the distance from the point to a reference line will be 12 units. And then the point is at distance of 8 units from profile plane the distance from reference line and point will be 8 units, sum is 20.

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