In questions fill in the blanks to make the statements true.
(A) If two ratios are equal, then they are in _____. Use Fig. 8.2 (In which each square is of unit length) for questions 39 and 40:
(B)The ratio of the perimeter of the boundary of the shaded portion to the perimeter of the whole figure is _______.
(C) The ratio of the area of the shaded portion to that of the whole figure is ______.