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Solid Figures. The sides of a solid figure are called faces . face. Edges are formed when two faces meet. edge. A vertex is formed where three edges meet. vertex. Vertices is the plural form of vertex .
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Edges are formed when two faces meet. edge
A vertexis formed where three edges meet. vertex Vertices is the plural form of vertex.
A prism is a solid figure whose bases lie in parallel planes and whose faces are parallelograms. base - bottom face of a solid figure
Prisms are named according to their bases. Base Name of Prism triangle triangular prism rectangle rectangular prism hexagon hexagonal prism
This is a special prism called a cube. All of its faces are squares.
A pyramid is a solid figure whose base is a polygon and whose faces are triangles with a vertex in common.
Pyramids are named according to their bases. Base Name of Pyramid triangle triangular pyramid rectangle rectangular pyramid pentagon pentagonal pyramid
How are pyramids different from prisms? A pyramid comes to a point or vertex. Math Tip
Not all solid figures have flat surfaces. Some 3-dimensional figures have curved surfaces. vertex Cone - a solid figure with one circular base and one vertex Cylinder - a solid figure with two congruent circular faces circular base