Additional questions (to be filled in in proportion) Circumference and Radius _ _ _ _ _ Circumference and Diameter _ _ _ _ Radius and Diameter _ _ _ _ _ Radius and Area _ _ _ _ _
The circumference of a circle is proportional to its radius; The circumference of a circle is proportional to its diameter; The radius of a circle is proportional to the square of its area and radius; The circumference of a square is proportional to the length of its side; So the answer is: proportional, proportional, proportional, proportional, proportional, proportional, proportional, not proportional.