12/1 Practice: Similarity & Missing Sides

Using Proportions to Solve for Missing Side Lengths

12/1/20

Multiple Choice

In similar figures, corresponding angles are _______.

• proportional

• similar

• congruent

• same shape, different size

Multiple Choice

In similar figures, corresponding side ratios are _______.

• similar

• proportional

• congruent

• bigger

Multiple Choice

Which proportion correctly represents the corresponding side lengths to solve for x?

• $\frac{10}{4}=\frac{\left(x+6\right)}{6}$
  

• $\frac{10}{4}=\frac{x}{6}$
  

• $\frac{10}{4}=\frac{6}{x}$
  

• $\frac{10}{4}=\frac{\left(x+6\right)}{x}$
  

Open Ended

Going by the matching color correspondence, are these triangles similar? Remember to consider both relationships between corresponding angles AND sides.

Multiple Choice

Find side length X.

• 30

• 25

• 15

• 40

Multiple Choice

Find side length X.

• 16

• 18

• 2.4

• 15

Multiple Choice

The triangles are similar, solve for the question mark.

• 12.5

• 8

• 24

• 18

Multiple Choice

The triangles are similar. Solve for x.

• x = 14

• x = 3

• x = 5

• x = 1

Multiple Choice

The triangles are similar. Solve for x.

• 10

• 18

• 20

• 12

Multiple Choice

The figures are similar. Solve for x.

• 8

• 6

• 10

• 12

Multiple Choice

Find the perimeter of the large triangle.

• 24

• 36

• 12

• 54

Multiple Choice

What is the measure of x?

• 12

• 15

• 6

• 9