Look around the room.

Have you ever noticed all of the angles.

The angles of corners, objects on your desk

Even the angle your elbow makes when you lean on the desk

Types of Angles

Right Angle

Acute Angle

Obtuse Angle

Right Angles

• Angles with one corner equal to 90 degrees

• It doesn’t matter which way the corner is facing

Acute Angles

• Angles with one corner less than 90 degrees

• It doesn’t matter which way the corner is facing

Obtuse Angles

• Angles with one corner greater than 90 degrees

• It also doesn’t matter which way the corner is facing

Lets Test Your Knowledge

Here are some angles.

Are they right, acute, or obtuse?