Investigate, with and without digital technologies, angles at a point. Use results to find unknown angles (ACMMG141)
LO: To identify angles on a point
Know:
- How to use a protractor to measure angles.
Understand:
- That all angles on a point add up to 360 degrees.
Do:
- I can find the angles on a point.
Angles Around a Point
Angles around a point always adds up to 360 degrees!
We can use reasoning to help solve angle around the point questions. Since we know that angles around a point has to add up to 360 degrees, if 240 is taken up from 1 section then we can subtract 240 from 360 which will give me the remaining piece.
360 – 240 = 120
In this case x = 120 degrees.
Teaching Ideas
