Key Geometry Vocabulary

Front

An angle with a measure between 0 and 90 degrees is called an _____________________. Options: acute angle, right angle, obtuse angle, straight angle

Back

acute angle

Front

An angle with a measure equal to 90 degrees is called a __________________________.

Back

right angle

Front

Points that are at the ends of a line segment are called _____________________________.

Back

endpoints

Front

A _______________ is a flat, 2-dimensional surface usually represented by a shape that looks like a floor or a wall.

Back

plane

Front

An angle with a measure equal to 180 degrees is called a _____________________. Options: straight angle, line, obtuse angle, acute angle

Back

straight angle

Front

Coplanar lines that do not intersect.

Back

Parallel Lines

Front

What are the arrows pointing to? Options: Ray, Endpoints, Midpoint, Vertex

Back

Endpoints

Front

Lines that cross or meet and form angles

Back

Intersecting lines

Front

An angle that measures greater than 90° but less than 180°

Back

Obtuse angle

Front

Back

line