Solid Figures

Vocabulary

SOLID FIGURES3 – Dimensional (3 – D)

shapesThey are made up of 2 – D shapes (squares, rectangles, triangles, circles, and more)

Include: cylinders, cubes, prisms, pyramids, cones, and spheres

POLYGONA 2 – D shape with

three or more sides (a circle is NOT a polygon)

POLYHEDRON

A 3 – D shape in which all faces and bases are

polygons

FACEOne of the sides of

a polyhedron (must be a

polygon in order to be a face)

BASEThe 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

EDGEThe intersection of

two faces in a solid figure

VERTEXThe point where

three or more edges meet.

VERTICES is the plural of “vertex”

PRISMA 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…

CUBEA special prism with all 6 faces

as congruent squares

CYLINDERA 3-D shape with two

parallel, congruent circular bases

NOT a polyhedron because the bases are not polygons

Examples of Cylinders…

PYRAMIDA polyhedron with

1 base and triangular facesPyramids are named after the

shape of the base

Examples of Pyramids…

CONEA 3-D figure with 1

circular baseNOT a polyhedron because the base is

not a polygon

Examples of Cones…

NETA 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 figureDraw the net & add up the areas of all of

the parts

VOLUMEThe number of cubic units needed to fill a

spaceThe amount of space

inside a solid figure