Solid Figures
10-17
parallel
congruent
bases
parallel
congruent
bases
lateral face (a polygon;
a face that is not a base)
edge (a segment)
vertex (a point)
The model at the right is an example of a solid figure.
Solid figures are three-dimensional. Their parts
are not all contained in the same plane.
Solid figures formed by flatplane surfaces are
called polyhedra.
Polyhedra are named by the shape of their base.
Prisms: polyhedra having polygons as parallel congruent bases
joined by rectangular faces.
triangular prism rectangular prism pentagonal prism
Pyramids: polyhedra having one polygon as a base
and triangular faces that share a common vertex.
triangular pyramid rectangular pyramid hexagonal pyramid
Not polyhedra: solid figures having curved surfaces.
cylinder cone sphere
Is the figure a prism or a pyramid? Tell how many
faces, edges, and vertices it has. (Hint: The bases are also faces.)
one base
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