Geometry Vocabulary

Front

Point

Back

A location in space with no dimensions, represented by a dot.

Front

Line Segment

Back

A part of a line that has two endpoints and a definite length.

Front

Parallel Lines

Back

Lines in a plane that never meet; they are always the same distance apart.

Front

Perpendicular Lines

Back

Lines that intersect at a right angle (90 degrees).

Front

Right Triangle

Back

A triangle with one angle measuring 90 degrees.

Front

Obtuse Triangle

Back

A triangle with one angle measuring more than 90 degrees.

Front

Acute Triangle

Back

A triangle where all angles are less than 90 degrees.

Front

Scalene Triangle

Back

A triangle where all the sides are different lengths.

Front

Isosceles Triangle

Back

A triangle where two of the sides are equal.

Front

Equilateral Triangle

Back

A triangle where all three sides are equal.