Basic Vocab Point, Lines & Planes

Front

A line extending indefinitely in one direction

Back

ray

Front

A measurable part of a line with two endpoints

Back

line segment

Front

Made of points with no thickness or width

Back

line

Front

Location with no size or shape

Back

point

Front

A flat surface made of points, extending indefinitely in all directions.

Back

plane

Front

Points on the same line

Back

Collinear

Front

≅ means

Back

congruent

Front

If two segments have the same length, then they are:

Back

congruent segments

Front

Three points in the same plane

Back

coplanar

Front

Identify the image:

Back

Ray