1. Missing Angles Our learning objectives today To calculate missing angles on a straight line, around a point and in a triangle. To use a protractor to draw and measure acute and obtuse angles to the nearest degree.

2. What do you need to know? Angles in a triangle add up to................. 180° Angles on a straight line add up to....... 180° Angles around a point add up to............. 360°

3. Calculate the missing reflex angle 47 ° 313°

4. Calculate the missing straight line angle 69 ° 111 °

5. Calculate the missing reflex angle 126 ° 234 °

6. Calculate the missing triangle angle 54° 89 ° 37°

7. Calculate the missing straight line angle 42° 103 ° 35°

8. Missing Angles Our learning objectives today To calculate missing angles on a straight line, around a point and in a triangle. To use a protractor to draw and measure acute and obtuse angles to the nearest degree.