Understanding Angles - 1

Multiple Choice

What is a obtuse angle

• It is an angle which is more than 180*

• It is an angle which is less than 90*

• It is an angle which is more than 90*

• It is an angle which is exactly 90*

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.