Geometry Basics for Grade 7

Front

Point

Back

A location in space with no size or dimension.

Front

Line

Back

A straight path extending in both directions with no endpoints.

Front

Plane

Back

A flat surface extending infinitely in all directions.

Front

Angle

Back

Formed by two rays with a common endpoint.

Front

Triangle Sum Theorem

Back

The sum of the interior angles of a triangle is 180°.

Front

Parallel Lines

Back

Lines in a plane that never intersect.

Front

Perpendicular Lines

Back

Lines that intersect to form right angles.

Front

Congruent Figures

Back

Figures that have the same size and shape.

Front

Circle

Back

A set of points equidistant from a center point.

Front

Pythagorean Theorem

Back

In a right triangle, a² + b² = c².