ppt

1. ANGLES
GRADE 6 MATHEMATICS

2. WHAT ARE ANGLES?
• The space between two
intersecting straight lines, at the
point in which they meet.
• The point where they meet is
called the vertex.
• Angles are measured in degrees.
straight line
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vertex
degrees

3. straight line
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vertex
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4. Acute (>0, <90 degrees)
Right (90 degrees)
Obtuse (>90, <180 degrees)
Straight (180 degrees)
Reflex (>180, <360 degrees)
Revolution (360 degrees)
smallest
largest
TYPES OF ANGLES

5. The internal measurement of two straight lines, where the
angle measures more than 0 but less than 90.
ACUTE ANGLES

6. A right angle is equal to 90
RIGHT ANGLES

7. The internal measurement of two straight lines, where the
angle measures more than 90 but less than 180.
OBTUSE ANGLES

8. A straight angle is equal to 180
STRAIGHT ANGLES

9. The external measurement of two straight lines, where the
angle measures more than 180 but less than 360.
REFLEX ANGLES

10. A full rotation of 360
REVOLUTION ANGLES

11. What types of angles can you see?

12. What types of angles can you see?

13. What types of angles can you see?