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The nature of surface of sphere is ______________(a) plane surface(b) singly curved surface(c) singly or doubly curved surface(d) doubly curved surfaceThis question was posed to me in an online quiz.I need to ask this question from Development of Surfaces topic in portion Development of Surfaces, Isometric Projections, Perspective Projections & Transformation of Projections of Civil Engineering Drawing |
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Answer» Correct choice is (d) doubly curved surface |
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