Three dimensional (3-D) figures are called solids. The flat surface on
a solid is called a face. The line segments where two faces meet are called edges. The edges meet at the vertex.
Learn to count the number of faces, edges, and vertexes on a solid.
Look at the solid cube below.
Notice the point of a cone is a vertex.
Look at the rectangular prism below.
Complete the following.
How many faces are on a cube?
faces.
How many edges are on a cube?
edges.
How many vertexes are on a cube?
vertexes.
How many line segments are on a
cube?
line segments.
How many vertexes are on the cone above?
vertexes.
How many faces, vertexes, and edges in all
are in the cube above?
in all.
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