Geometry Vocabulary Review

Front

lines that form right angles (square corners) at the point where they cross

Back

Perpendicular lines

Front

The picture shows ___________ AOB.

Back

Angle

Front

lines that do not cross

Back

Parallel lines

Front

What does this represent? (angle ABC, triangle ABC, arc ABC, line ABC)

Back

Angle ABC

Front

What does this symbol mean? (Is congruent to, is equal to, is not congruent to, is not equal to)

Back

Is congruent to

Front

A straight line that extends infinitely in both directions

Back

Line

Front

A part of a line that has a fixed starting point and extends infinitely in one direction

Back

Ray

Front

A flat surface that extends infinitely in all directions

Back

Plane

Front

A figure formed by two rays with a common endpoint

Back

Angle

Front

Two angles that add up to 90 degrees

Back

Complementary angles