Unit 1 Geometry Vocab

Front

Measures the space inside a 2D figure, expressed in sq. units.

Back

area

Front

Each flat side of a polyhedron

Back

Face

Front

Sum of areas of faces.

Back

Surface area

Front

A face that gives a solid its name. A prism has two identical that are parallel. A pyramid has one.

Back

base (of a pyramid or prism)

Front

Cubic units filling a solid without gaps or overlaps.

Back

volume

Front

Each straight side of a polygon

Back

edge

Front

A polygon with four sides

Back

quadrilateral

Front

One side of a shape, perpendicular to its height.

Back

base (of a parallelogram or triangle)

Front

Perpendicular distance from base to opposite side in a parallelogram and from base to opposite vertex in a triangle, sometimes outside the shape.

Back

height

Front

Solid with a polygon base and triangular faces meeting at a vertex.

Back

pyramid