Ratios of Areas and Perimeter

Find the ratio (blue to red) of the perimeter.

• 4/7

• 7/4

• 49/16

• 16/49

What is the perimeter of the smaller hexagon?

• 5 cm

• 1/6 cm

• 6 cm

• not enough info

True or False: If two figures are similar, the ratio of their corresponding sides is equivalent to the ratio of their perimeters.

• True

• False

Triangle PQR is similar to triangle XYZ.  What is the PERIMETER of triangle XYZ?

• 21 cm

• 63 cm

• 105 cm

• 126 cm

If two triangles are similar, how are their perimeters related?

• The perimeters are equal.

• The perimeters are proportional to the scale factor between the triangles.

• The perimeters are not related.

• The perimeters are inversely proportional to the scale factor between the triangles.

The two figures are similar. Find the ratios (red to blue) of the perimeters and of the areas. (Select all that apply.)

The two figures are similar. Find the ratios (red to blue) of the perimeters and of the areas. (Select all that apply.)

The two figures are similar. Find the ratios (red to blue) of the perimeters and of the areas. (Select all that apply.)

The figures are similar. Find x.

The ratio of the perimeters is 7:10.

x = ____

Mathematical Equivalence

ON