Angle

We been looking again at the pattern blocks and the dodecagons we made (here and here), this time looking the angles on each corner.

Can you say what all the angles are? They're all multiples of 30°.

We made a kind of quick "compass" with angles marked on it:

And we practiced turning angles, and positioning ourselves at particular angles:

For our next step, we used a turtle, a little turtle that we could give instructions to. For a square, it was: Forward 20, left 90, forward 20, left 90...

For a hexagon, it was: Forward 20, left 60, forward 20, left 60...

For a triangle, it was: Forward 20, left 120, forward 20, left 120...