Chapter 4 Review

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size. Their corresponding angles are equal, and their corresponding sides are in proportion.

Front

How do you solve a proportion?

Back

To solve a proportion, you can cross-multiply the two ratios and set them equal to each other. For example, if a/b = c/d, then a*d = b*c.

Front

What is the ratio of red toy cars to all toy cars if Aaron has 2 black, 3 red, and 5 white toy cars?

Back

The ratio of red toy cars to all toy cars is 3:10.

Front

If the waiting time for 150 people is 20 minutes, how do you find the waiting time for 240 people?

Back

Set up a proportion: 150/20 = 240/x. Cross-multiply and solve for x to find the waiting time.

Front

What is the formula to convert cups to fluid ounces?

Back

1 cup = 8 fluid ounces. To convert cups to fluid ounces, multiply the number of cups by 8.

Front

What is the missing side in similar figures if one side is 9 and the corresponding side is 63?

Back

The missing side (x) is 63.

Front

How do you find the total number of toy cars if you know the number of each color?

Back

Add the number of each color together. For example, 2 black + 3 red + 5 white = 10 total toy cars.

Front

What is the definition of a ratio?

Back

A ratio is a comparison of two quantities by division, often expressed as 'a:b' or 'a/b'.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD). For example, the ratio 4:8 simplifies to 1:2.

Front

What is the relationship between the angles of similar figures?

Back

The corresponding angles of similar figures are equal.