Chapter 8 Review

Find the scale factor

ABCD~EFGH

Mathematical Equivalence

ON

Two similar triangles have a pair of corresponding sides of length 12 meters and 8 meters. The larger triangle has a perimeter of 48 meters and an area of 180 square meters. Find perimeter P of the smaller triangle.

P = _ m

Decide whether the two polygons are similar

• Yes

• No

A square piece of cloth with an area of 324​ square inches is folded in half twice to form the napkin shown. What is the area of the folded napkin in square inches?

Mathematical Equivalence

ON

Determine whether the triangles are similar

• Yes

• No

A cell tower casts a shadow that is 72 feet long, while a nearby tree that is 27 feet tall casts a shadow that is 6 feet long. How tall is the tower?

The tower is ​ (a)   feet tall

• 324
• 16
• 2.25
• 162