Similarity and Proportions

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• not similar

Find the missing length. The triangles in each par are similar.

• 12

• 18

• 9

• 13

Find the missing length. The triangles in each par are similar.

• 55

• 68

• 52

• 50

Find the missing length. The triangles in each par are similar.

• 51

• 36

• 49

• 29

Find the missing length. The triangles in each par are similar.

• 46

• 78

• 84

• 93

Solve for x. The triangles in each pair are similar.

• 5

• 7

• 8

• 12

Solve for x. The triangles in each pair are similar.

• 8

• 4

• 14

• 3

The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger. (smaller on top)

• 3 : 10

• 1 : 2

• 7 : 10

• 4 : 5

The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger. (smaller on top)

• 7 : 9

• 1 : 6

• 1 : 3

• 1 : 2

The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger. (smaller on top)

• 1 : 6

• 5 : 6

• 1 : 2

• 7 : 9