Geometry Vocab #1

Front

Points on the same line are called __________.

Back

collinear points

Front

Angle measuring 90 degrees is a _____________.

Back

right angle

Front

Angle between 0° and 90° is an _____________.

Back

acute angle

Front

A continuous straight extent of length, without breadth or thickness, with arrowheads on both sides is called a _____________.

Back

line

Front

A flat, 2D surface represented by a shape like a floor or wall.

Back

plane

Front

A part of a line with 2 endpoints and all points in between.

Back

line segment

Front

A part of a line with one endpoint extending in one direction.

Back

ray

Front

Angle between 90° and 180° is an _____________.

Back

obtuse angle

Front

An object with no dimension, represented by a dot in space.

Back

point

Front

Angle measuring 180° is a _____________.

Back

straight angle