Please help me answer problems 3 and 4 for I am confused about why the shapes are similar. Thank You!
4) All circles are similar because they all lack angle measurements. Like triangles have angle measurements, and squares and other shapes. Except circles. That's one thing that makes them all similar.
All circles are similar BECAUSE the ratio of the circumference to the diameter is ALWAYS the same for all circles, that is: Circumference / Diameter = Pi