Chapter 7 Math Vocabulary

Front 1

Circumference

Back 1

The distance around a circle.

Front 2

Complex figure

Back 2

A figure that is made up of two or more shapes.

Front 3

Cone

Back 3

A three-dimensional figure with one circular base. A curved surface connects the base and vertex.

Front 4

Cylinder

Back 4

A solid whose based are congruent, parallel circles, connected with a curved side.

Front 5

Diameter

Back 5

The distance across a circle, through its center.

Front 6

Edge

Back 6

The intersection of faces of a three-dimensional figure.

Front 7

Face

Back 7

Any surface that forms a side or base of a prism.

Front 8

Lateral area

Back 8

The sum of the areas of the _________ faces of a pyramid.

Front 9

Lateral face

Back 9

A triangular side of a pyramid.

Front 10

Polyhedron

Back 10

A solid with flat surfaces that are polygons.

Front 11

Precision

Back 11

The ____________ of a measure depends on the unit of measure. The smaller the unit, the more ___________.

Front 12

Prism

Back 12

A polyhedron with two parallel, congruent faces called bases

Front 13

Pyramid

Back 13

A polyhedron with one base that is a polygon and with faces that are triangles.

Front 14

Radius

Back 14

The distance from the center of circle to any point on the circle.

Front 15

Significant digits

Back 15

All of the digits of a measurement that are known to be accurate plus the estimated digit.

Front 16

Slant height

Back 16

The altitude or height of each lateral face of a pyramid.

Front 17

Surface area

Back 17

The sum of areas of all of the faces of a three-dimensional figure.

Front 18

Vertex

Back 18

The _________ of a prism if the point where three or more planes intersect.

Front 19

Volume

Back 19

The number of cubic units needed to fill the space occupied by a solid.