1. What type of angle is it?

2. Objectives Understand the different types of angles Acute Right Angle
Obtuse
Straight Angle
Reflex
Draw angles correctly

3. Vocabulary Angle West Whole Right Angle Clockwise 360º Degrees
Anti-Clockwise
180º
Position
Horizontal
90º
Direction
Vertical
45º
North
Grid
East
Turn
South
Compass

4. Using your Compass N W E S

5. Acute Angle
Acute angles are less than 90o.

6. Right Angle
Right angles are 90o

7. Obtuse Angle
Obtuse angles are more than 90o but less than 180o.

8. Straight Angle
Straight angles are180º.

9. Reflex Angle
Reflex angles are more than 180o.

10. Remember… Acute angles are less than 90o. Right angles are 90o.
Obtuse angles are more than 90o but less than 180o.
Straight angles are 180º
Reflex angles are more than 180o.

11. Success Criteria
I can understand the difference between an acute, right angles, obtuse, straight and reflex angles.
I can measure correctly?
I can label correctly?
Can I use a protractor?