Similar Areas and Perimeters

• AA~

• SSS~

• SAS~

• not ~

• AA~

• SSS~

• SAS~

• not ~

What is the ratio of the lengths of the sides of two squares with perimeters of 8 in. and 12 in. respectively?

Find the ratio of the areas of two similar triangles in which a pair of corresponding sides have lengths of 1 ½ in. and 2 ½ in. respectively.

The areas of two similar triangles are 36 sq in. and 64 sq in. respectively. Find the ratio of the lengths of a pair of corresponding sides.

Two similar triangles have areas of 144 sq in. and 81 sq in. respectively. If one side of the larger triangle is 18 in. long, find the length of the corresponding side of the smaller triangle.

Two similar triangles have areas of 1 sq in. and 2 sq in. respectively. If the perimeter of the second figure is 6 inches, what is the perimeter of the first triangle?

DE\parallel BC. AB = 12, AD = 4, and AE = 3. Find AC.

• 1

• 9

• 11

• 6

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

• 11/6

• 6/11

• 121/36

• 36/121

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

• 9/14

• 14/9

• 196/81

• 81/196