- If you fold a square piece of paper along one of its diagonals, like this:
[[{"fid":"11","view_mode":"full","type":"media","attributes":{"height":220,"width":220,"alt":"Square with a diagonal dotted line","title":"Square with a diagonal dotted line","class":"media-element file-full"}}]]

then you get a figure like this:

[[{"fid":"12","view_mode":"full","type":"media","attributes":{"height":220,"width":220,"style":"width: 220px; height: 220px;","alt":"Right isosceles triangle","title":"Isosceles triangle","class":"media-element file-full"}}]]

What kind of triangle is this? What is the relationship between the area of this triangle and the area of the original square? Explain how you decided on the relationship.

- Where in the square below could you fold in order to construct a rectangle with exactly ½ the area of the square? How do you know your rectangle has exactly ½ the area of the square?