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4-74.

The shaded figures below are similar.

An irregular quadrilateral enclosed by a rectangle. The 2 shapes share the left base, 22 centimeters. Outside the shaded irregular quadrilateral are 2 right triangles, one at the top right corner with a leg, 24, also the length of the rectangle, & another leg, 10, down the right side of the rectangle. The other right triangle is at the lower right corner of the rectangle with a leg, 5, going left from the bottom right rectangle corner, and another leg, 12, up the right side of the rectangle.An irregular quadrilateral enclosed by a rectangle. The 2 shapes share the left base, m centimeters. Outside the shaded irregular quadrilateral are 2 right triangles, one at the top right corner with a leg, n, also the length of the rectangle, & another leg, 15, down the right side of the rectangle. The other right triangle is at the lower right corner of the rectangle with a leg, going left from the bottom right rectangle corner, and another leg, up the right side of the rectangle.

  1. Solve for and .

    Similar figures have proportional side lengths that can be written as equivalent ratios.

  2. Calculate the area and perimeter of each figure.

    Calculate the area of each outlined rectangle.

    Then, subtract the areas of the blank spaces.