Understanding Right Angles

Front

Definition

Back

90-degree angle

Front

Symbol

Back

∟

Front

Right Triangle

Back

One 90° angle

Front

Square Corner

Back

Example of right angle

Front

Perpendicular Lines

Back

Form right angles

Front

Protractor Use

Back

Measure 90°

Front

Complementary Angles

Back

Sum to 90°

Front

Quadrants

Back

4 right angles in a circle

Front

Geometry

Back

Basic concept

Front

Carpentry

Back

Right angles for joints