14 terms

circumference

The distance around a circle

polygon

a closed, plane figure whose sides are segments that intersect only at endpoints

surface area

The sum of the areas of its faces

solid

a three dimensional figure that encloses space and whose sides (faces) are polygons

height

always drops perpendicular to the base

cone

a solid with one circular base

volume

The amount of space an object takes up

cylinder

a solid with congruent circular bases that lie in parallel planes

heptagon

polygon with 7 sides

trapezoid

A quadrilateral with only one pair of parallel sides

prism

a three-dimensional figure that encloses space and whose sides (faces) are polygons

regular polygon

all sides congruent; all angles congruent

pyramid

a solid whose base can be any polygon and whose lateral faces are triangles

lateral face

a side of a solid other than its base