Warm Up: Similar Figures and Ratios

• 2

• 7

• 0.5

• 12

Find missing side

• 5

• 7

• 9

• 11

Two similar triangles have side lengths in the ratio of 3:5. If the smaller triangle has a side length of 9 cm, what is the corresponding side length in the larger triangle?

• 12 cm

• 15 cm

• 18 cm

• 21 cm

• 6 cm

• 8 cm

• 9 cm

• 18 cm

Two similar rectangles have corresponding angles of 90°, 90°, 90°, and 90°. What are the measures of the corresponding angles in the second rectangle?

• 45°, 45°, 45°, 45°

• 60°, 60°, 60°, 60°

• 90°, 90°, 90°, 90°

• 120°, 120°, 120°, 120°

A pair of similar triangles have a scale factor of 4:7. If the perimeter of the smaller triangle is 20 cm, what is the perimeter of the larger triangle?

• 28 cm

• 35 cm

• 40 cm

• 70 cm

In two similar triangles, the corresponding sides are in the ratio 5:8. If the length of a side in the larger triangle is 24 cm, what is the length of the corresponding side in the smaller triangle?

• 10 cm

• 15 cm

• 18 cm

• 20 cm

Two similar trapezoids have a scale factor of 3:4. If the area of the smaller trapezoid is 27 cm², what is the area of the larger trapezoid?

• 36 cm²

• 48 cm²

• 54 cm²

• 64 cm²

• 2.5 cm

• 5 cm

• 10 cm

• 15 cm