Geometry Essentials for Grade 10

Front

Point

Back

Exact location in space

Front

Line

Back

Straight path, no thickness, extends forever

Front

Plane

Back

Flat surface, extends infinitely

Front

Angle

Back

Formed by two rays with common endpoint

Front

Triangle

Back

3-sided polygon

Front

Circle

Back

Set of points equidistant from center

Front

Perimeter

Back

Distance around a shape

Front

Area

Back

Space inside a shape

Front

Volume

Back

Space inside a 3D object

Front

Pythagorean Theorem

Back

a² + b² = c² in right triangle