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Geometry: Cross-Sections of Three-Dimensional Figures
Understanding Cross-Sections
Description
Introduction
A cross-section is a two-dimensional figure formed when a plane cuts through a three-dimensional solid. Its shape depends on the solid and the position and direction of the...
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Transcript
A teacher slices a block of cheese. The flat surface along which the knife cuts represents a plane.
A plane is a flat, two-dimensional surface. When a plane cuts through a three-dimensional solid, the shape formed is called a cross-section.
The cheese is a rectangular prism. When the slicing plane is parallel to a rectangular face, ...
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