Two square's
A square and and a triangle
Two equilateral triangles.
A triangle and a square
4 rectangles / Correction: two triangles.
A square and and a triangle
Yes, take a square, cut into 5 shapes.
It depends on the 7 shapes that you start with.
You can make a square, a rhombus, a parrallelogram, a kite, a rectangle, and a trapezoid. If you were to make all these shapes out of two triangles, you would have to have different sized triangles for most of them. If you put the bottoms of both of them together, it will make a diamond shape. But they would have to be the same size.
a circle and square
A square can be drawn with four lines.
A triangle and a square. The base of a pyramid is a square.