I learned something from the year 7 textbook recently! I was surprised that I had never thought about these two facts (as shown in questions 2 and 3 above.
And the answers were there, staring at me from the page. I would love make this into an activity where the questions build:
- Draw a triangle that tessellates. And another. And another. Do all triangles tessellate? Prove it.
- Draw a quadrilateral that tessellates. And another. And another. Do all quadrilaterals tessellate? Prove it.
What have you learned lately? Have you been surprised?