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Cross-Sections and Nets

Cross-sections are intersections of a plane with a solid, and nets are unfolded, flat representations of the sides of a 3-D shape.

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Cross-Sections and Nets

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cross section

A cross section is the intersection of a three-dimensional solid with a plane.


A net is a diagram that shows a “flattened” view of a solid. In a net, each face and base is shown with all of its dimensions. A net can also serve as a pattern to build a three-dimensional solid.


A polyhedron is a solid with no curves surfaces or edges. All faces are polygons and all edges are line segments.

Solid Figure

A solid figure is a three-dimensional figure with height, width and depth.


Volume is the amount of space inside the bounds of a three-dimensional object.

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