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Right Angle
A right angle is 90⁰.
Acute Angle
An acute angle is less than 90⁰.
Obtuse Angle
An obtuse angle is more than 90⁰ and less than 180⁰.
Straight Angle
A straight angle is exactly 180⁰.
Reflex Angle
A reflex angle is greater than 180⁰ and less than 360⁰.
What kind of angle is this?
Obtuse Straight ReflexRight Acute
What kind of angle is this?
Obtuse Straight ReflexAcuteRight
What kind of angle is this?
Straight ReflexAcuteRight Obtuse
What kind of angle is this?
ReflexAcuteRight Obtuse Straight
What kind of angle is this?
AcuteRight Obtuse Straight Reflex
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Ordering Angles
Order these angles from smallest to largest. In each question, draw an angle ‘e’ to go in the place marked ‘e’ in the answer box.
Aim: I can order angles.
1. a) b) c) d) e)
2. a) b) c) d) e)
3. a) b) c) d) e)
4. a) b) c) d) e)
Page 1 of 4
e
e
e
e
5. a) b) c) d) e)
6. a) b) c) d) e)
7. a) b) c) d) e)
8. a) b) c) d) e)
Page 2 of 4
e
e
e
e
9. a) b) c) d) e)
10. a) b) c) d) e)
Page 3 of 4
e
eChallengeDraw four angles in order of size from smallest to largest.
Page 4 of 4
Ordering Angles Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
d b a
a c d
a db
c ba
b da
c bd
d c b
d c b
d ab
ab d
c
c
a
d
a
b
c
c
c
a
e
e
e
e
e
e
e
e
e
e
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/LFHQVHG�WR�5RH�9DOOH\�,QWHJUDWHG�3ULPDU\�6FKRRO
/LFHQVHG�WR�5RH�9DOOH\�,QWHJUDWHG�3ULPDU\�6FKRRO
/LFHQVHG�WR�5RH�9DOOH\�,QWHJUDWHG�3ULPDU\�6FKRRO
