Unit 4.1-4.2

Front

What is a scale version of a shape?

Back

A scale version of a shape is a proportional representation of the original shape, where all dimensions are multiplied by the same factor.

Front

How do you determine if two shapes are scale versions of each other?

Back

To determine if two shapes are scale versions, compare the ratios of their corresponding dimensions. If the ratios are equal, they are scale versions.

Front

What is the ratio of length to width for a rectangle?

Back

The ratio of length to width for a rectangle is calculated by dividing the length by the width.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

How do you calculate the unit rate from a given quantity?

Back

To calculate the unit rate, divide the total quantity by the number of units.

Front

If a pool filter cleans 20 gallons of water in 8 hours, what is the unit rate in gallons per hour?

Back

2.5 gallons per hour.

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Front

What is the significance of the ratio 7:19 in U.S. flags?

Back

The ratio 7:19 is the official ratio of length to width for U.S. government flags.

Front

How do you convert feet to inches?

Back

To convert feet to inches, multiply the number of feet by 12.

Front

What is the area of a painting that is 3.5 ft long and 2.5 ft tall?

Back

Area = 3.5 ft × 2.5 ft = 8.75 square feet.