28.1.4 Pyramids, Frustums, and Solids of Revolution
28.1 From Flat to Spatial: Seeing in 3D
Point 4 of 5
28.1.4 Pyramids, Frustums, and Solids of Revolution
Core idea
A pyramid tapers to a point like the great pyramids; slice the tip flat and it becomes a frustum; spin any figure around an axis and it sweeps out a solid of revolution.
Module goal. Building on flat figures, develop an intuitive sense of solid shapes, and learn to draw them on paper using sketches and projections, then rebuild the solid from the drawing.
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