SAD - Angle Basics

Shapes and Designs Unit

Angle Basics

Angles are made up of two rays that start at the same
point and (most often) go out in two different directions.

​Press Play!

Multiple Choice

Which choice below accurately names this angle?

• Angle Y

• Angle X

• Angle Z

Multiple Choice

Which choice below accurately names this angle?

• Angle NLM

• Angle LMN

• Angle MNL

Point your index finger and thumb in the direction of the angle with the vertex in the corner between them. The name will travel the path from your thumbnail to your index fingernail (or the opposite).

Having a little trouble naming the angles? Try this!

This angle is either <ABC or <CBA

Multiple Choice

Which choice below accurately names this angle?

• Angle XZY

• Angle ZYX

• Angle ZXY

Multiple Choice

What is the Vertex of this Angle?

• E

• F

• G

Multiple Choice

Which is NOT a name of this angle?

• <HJK
• <KJH
• <J
• <JHK

Multiple Choice

Which choice below accurately names this angle?

• Angle CDE

• Angle ECD

• Angle DEC

Angle
Types

​Press Play!

Multiple Choice

What type of angle is this? 

• acute
• obtuse
• right
• big

Multiple Choice

What type of angle is shown?

• acute
• obtuse
• right
• straight

Match

Match the angle with its description

• ACUTE ANGLE

• OBTUSE ANGLE

• RIGHT ANGLE

• STRAIGHT ANGLE

LESS THAN 90 DEGREES

MORE THAN 90 DEGREES

EQUAL TO 90 DEGREES

EQUAL TO 180 DEGREES

• LESS THAN 90 DEGREES

• MORE THAN 90 DEGREES

• EQUAL TO 90 DEGREES

• EQUAL TO 180 DEGREES

Multiple Choice

What is the area of this triangle?

• 30 units²

• 35 units²

• 60 units²

• 70 units²

Multiple Choice

What is the area of the rectangle?

• 42 square centimeters

• 40 square centimeters

• 40 centimeters

• 42 centimeters

• 13 centimeters