18 terms

Vocabulary words students in N-MUSD are expected to know. The first sets concern math. In particular, the Essential Math Concepts, identified by CUSD.

altitude

The perpendicular distance from the base of a geometric figure to the opposite vertex.

base

The number being put to a power: 8^3=8x8x8, 8 is the base.

circumference

The distance around a circle: equal to pi times diameter.

cone

A solid figure with a circular base and one vertex.

cylinder

A solid figure with two parallel, congruent circular bases connected by a curved surface.

edge

The line segment along which two faces of a 3D shape intersect.

face

A flat surface of a 3D shape.

lateral area

The area of the lateral surface of a solid.

net

A connected arrangement of polygons in a plane that can be folded up to form a polyhedron.

pi

The ratio of the circumference of a circle to the length of its diameter: pi is about 3.14.

prism

A 3D shape whose two bases are congruent, parallel polygons in parallel planes and whose lateral faces are parallelograms.

pyramid

A polyhedron with one base that is a polygon and with lateral faces that are triangles which share a common vertex.

slant height

The length of a lateral edge of a conic solid.

solid figure

A three-dimensional shape.

sphere

A solid figure with all points the same distance from the center.

surface area

The sum of the areas of all the faces, or surfaces, of a solid figure.

vertex

The point where two sides meet.

volume

The number of cubic units needed to occupy a given space.