Understanding Angles

Understanding

Angles

The place where 2 lines meet!

An angle is a place where two lines meet.

​These are angles.

​These are NOT angles.

Multiple Choice

Find the angle.

Multiple Choice

Which one is NOT an angle?

An angle is shown by part of a circle.

The bigger the part of the circle, the bigger the angle.

​Angle D is the biggest angle, because it shows the biggest part of a circle.

​Angle C is the smallest angle, because it shows the smallest part of a circle.

Reorder

Order the Angles from SMALLest (1) to BIGgest (5)

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

All angles have a number and a unit name.

The unit for angles is degrees.

​This angle is 90 degrees.

​This angle is 130 degrees.

​This angle is 15 degrees.

Multiple Choice

The units for angles are ___.

• Inches

• Seconds

• Degrees

• Grams

A 90 degree angle is called a right angle.

A right angle looks like the corner of a rectangle.

​These are right angles.

​These are NOT right angles.

Multiple Choice

A 90 degree angle is called a ___.

• Straight Angle

• Right Angle

• Circle

Multiple Choice

Find the right angle.

Multiple Choice

Find the right angle.

Multiple Choice

Which one is NOT a right angle?

A circle is made of 4 right angles.

4 X 90 = 360

So a circle is 360 degrees.

Multiple Choice

A ____ is made of 4 right angles.

• Circle

• Triangle

• Straight Line

Multiple Choice

A circle is made of ___ right angles.

• 2

• 4

• 8

• 16

Multiple Choice

A circle is ___ degrees.

• 90

• 180

• 270

• 360

Multiple Choice

Which one shows 360 degrees?

A straight angle is made of 2 right angles.

2 X 90 = 180

So a straight angle is 180 degrees.

Multiple Choice

A ____ is made of 2 right angles.

• Circle

• Triangle

• Straight Angle

Multiple Choice

A straight angle is made of ___ right angles.

• 2

• 4

• 8

• 16

Multiple Choice

A straight angle is ___ degrees.

• 90

• 180

• 270

• 360

Multiple Choice

Which one shows 180 degrees?

Match

Match the diagram to its size.

90 degrees

180 degrees

360 degrees

• 90 degrees

• 180 degrees

• 360 degrees

Match

Match the diagram to its name.

Right Angle

Straight Angle

Circle

• Right Angle

• Straight Angle

• Circle

Match

Match the measurement to its name.

• 90 degrees

• 180 degrees

• 360 degrees

Right Angle

Straight Angle

Circle

• Right Angle

• Straight Angle

• Circle