Scale Mastery Check Study Guide

Front

What is a scale in mathematics?

Back

A scale is a ratio that compares a measurement on a drawing or model to the actual measurement of the object.

Front

If a scale is 1 cm : 3 ft, how do you convert cm to ft?

Back

Multiply the number of cm by 3 to get the equivalent measurement in feet.

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width.

Front

How do you find the area of a rectangle with dimensions 4 cm by 5 cm?

Back

Area = length × width = 4 cm × 5 cm = 20 cm².

Front

What happens to the area when you enlarge a shape using a scale?

Back

The area increases by the square of the scale factor.

Front

If a rectangle's dimensions are enlarged using a scale of 1 cm : 3 ft, what is the new area of a rectangle with dimensions 4 cm by 5 cm?

Back

New area = 180 ft².

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity.

Front

How do you determine the scale factor between two similar figures?

Back

Divide the length of a side of the larger figure by the corresponding side of the smaller figure.

Front

If the scale factor from a smaller quadrilateral to a larger one is 4, what does this mean?

Back

It means each side of the larger quadrilateral is 4 times the length of the corresponding side of the smaller quadrilateral.

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.