Basic Geometry Terms

Front

Parallel lines

Back

Two lines that never intersect (cross over).

Front

Perpendicular lines

Back

Lines that intersect to form square (right) angles.

Front

Quadrilateral

Back

A shape with exactly four sides and four vertices.

Front

Ray

Back

A part of a line with one endpoint and continues endlessly in one direction.

Front

Symmetry

Back

When an object looks the exact same on one side as the other when cut in half.

Front

Parallelogram

Back

A quadrilateral with two pairs of parallel sides.

Front

Intersecting lines

Back

Lines that pass through the same point.

Front

Line segment

Back

A part of a line that has two endpoints.

Front

Point

Back

An exact position.