Angles

Acute & obtuse angles

Name: ______________________________Date: ______________Score: ______ / 20

1.
How many degrees are there in a right angle?
°
2.
What type of angle is 45°?
1. AAcute
2. BRight angle
3. CObtuse
3.
What type of angle is 120°?
1. AAcute
2. BRight angle
3. CObtuse
4.
What type of angle is exactly 90°?
1. AAcute
2. BRight angle
3. CObtuse
5.
An acute angle is...
1. Aless than 90°
2. Bexactly 90°
3. Cbetween 90° and 180°
6.
An obtuse angle is...
1. Aless than 90°
2. Bbetween 90° and 180°
3. Cexactly 90°
7.
How many degrees are there in two right angles?
°
8.
What type of angle is 30°?
1. AAcute
2. BRight angle
3. CObtuse
9.
What type of angle is 150°?
1. AAcute
2. BRight angle
3. CObtuse
10.
An acute angle is smaller than a right angle.
True False
11.
An obtuse angle is smaller than a right angle.
True False
12.
What type of angle is 80°?
1. AAcute
2. BRight angle
3. CObtuse
13.
What type of angle is 100°?
1. AAcute
2. BRight angle
3. CObtuse
14.
An obtuse angle is bigger than 90° but smaller than 180°.
True False
15.
Which is the correct name for an angle of 60°?
1. AAcute angle
2. BObtuse angle
3. CRight angle
16.
Two right angles together make a...
1. Astraight line
2. Bfull turn
3. Cacute angle
17.
What type of angle is 89°?
1. AAcute
2. BRight angle
3. CObtuse
18.
What type of angle is 91°?
1. AAcute
2. BRight angle
3. CObtuse
19.
An angle of exactly 90° is called a right angle.
True False
20.
An angle of 135° is acute.
True False

Answer key

Angles — Acute & obtuse angles