Angles on a straight line and around a point.

Author:
nsimpson1
Topic:
Angles, Circle
1. What do you notice when you move the slider to make the pink angle 90°? 2. When the pink angle is below 90°, what do you notice about the blue angle? 3. Can you write a generalisation that would work every time, for calculating the blue and pink angles?
1. What do you notice when you move the slider to make the pink angle 180°? 2. When the pink angle is below 180°, what do you notice about the blue angle? 3. Can you write a generalisation that would work every time, for calculating the blue and pink angles?