Geometry Basics

Front

Colinear

Back

Points on the same line.

Front

Line Segment

Back

Part of a line that has two endpoints and all the points between

Front

Ray

Back

Part of a line consisting of one endpoint and all the points of the line on one side of the endpoint

Front

Congruent

Back

Equal in measure

Front

Midpoint

Back

Point the divides a line segment into two congruent segments

Front

Segment Bisector

Back

A line, line segment, or ray that divides a line segment into two congruent segments

Front

Perpendicular Lines

Back

Lines that intersect to form right angles

Front

Angle

Back

Formed by two rays with the same endpoint called the vertex

Front

Acute Angle

Back

An angle whose measure is less than 90 degrees but greater than 0 degrees

Front

Right Angle

Back

An angle whose measure is 90 degrees