Ratios in Polygons

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Are the following similar? Why or why not?

• Yes
• No, the corresponding angles are not equal.
• No, the ratios of the corresponding sides are not equal.

Are the two figures similar?

• yes
• no

If ABCDE ∼ GHJDF, then∠B is congruent to _______

• ∠H
• ∠D
• ∠F
• ∠J

Show the triangles similar

• A

• B

• C

• D

What is the scale factor from the smaller triangle to the larger triangle?

• 2
• 3/2
• 2/3
• 1/2

The pair of figures are similar. Find the missing side.

• x = 9
• x = 28
• x = 7
• x = 63

Solve for x. The two figures are similar.

• x = 6
• x = 9
• x = 7
• x = `0

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

• 11/6
• 6/11
• 121/36
• 36/121

The ratio of the corresponding sides of two similar triangles is 3:5.  What is the ratio of the perimeters of these triangles?

• 5:3
• 9:25
• 3:5
• 6:10