Solid Figures Vocabulary
SOLID FIGURES 3 – Dimensional (3 – D) shapes They are made up of 2 – D shapes (squares, rectangles, triangles, circles, and more) Include: cylinders, cubes, prisms, pyramids, cones, and spheres
A 2 – D shape with three or more sides (a circle is NOT a polygon)
A 3 – D shape in which all faces and bases are polygons POLYHEDRON A 3 – D shape in which all faces and bases are polygons
FACE One of the sides of a polyhedron (must be a polygon in order to be a face)
The solids we study will have either 1 or 2 bases The part of the figure that is on the top or bottom (the part it sits on) The solids we study will have either 1 or 2 bases
The intersection of two faces in a solid figure EDGE The intersection of two faces in a solid figure
VERTEX The point where three or more edges meet. VERTICES is the plural of “vertex”
Prisms are named by the shapes of their two bases A polyhedron with 2 parallel and congruent bases, and the other faces are rectangles Prisms are named by the shapes of their two bases
Examples of Prisms…
A special prism with all 6 faces as congruent squares CUBE A special prism with all 6 faces as congruent squares
CYLINDER A 3-D shape with two parallel, congruent circular bases NOT a polyhedron because the bases are not polygons
Examples of Cylinders…
PYRAMID A polyhedron with 1 base and triangular faces Pyramids are named after the shape of the base
Examples of Pyramids…
CONE A 3-D figure with 1 circular base NOT a polyhedron because the base is not a polygon
Examples of Cones…
A pattern that can be folded to create the outside of a solid figure NET A pattern that can be folded to create the outside of a solid figure
SURFACE AREA The sum of the areas of the 2 – D shapes which make up a solid figure Draw the net & add up the areas of all of the parts
VOLUME The number of cubic units needed to fill a space The amount of space inside a solid figure