7.G.1

Front

What is the formula for calculating the perimeter of a triangle?

Back

The perimeter of a triangle is calculated by adding the lengths of all three sides: P = a + b + c.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine the proportional relationship between two similar figures.

Front

If a triangle has sides of lengths 10, 12, and 14, what is its perimeter?

Back

The perimeter is 10 + 12 + 14 = 36.

Front

How do you convert feet to inches?

Back

To convert feet to inches, multiply the number of feet by 12 (since 1 foot = 12 inches).

Front

What is the scale drawing of an object?

Back

A scale drawing is a representation of an object that is proportional to its actual size, using a specific ratio.

Front

If the scale factor from shape A to shape B is 2/3, what does this mean?

Back

It means that every dimension of shape A is multiplied by 2/3 to get the corresponding dimension in shape B.

Front

What is the height of a building in a scale drawing if the actual height is 300 ft and the scale is 1 inch : 10 ft?

Back

The height in the scale drawing is 300 ft / 10 ft/inch = 30 inches.

Front

What is the relationship between similar figures and scale factors?

Back

Similar figures have the same shape but different sizes, and the scale factor describes how much larger or smaller one figure is compared to the other.

Front

If a triangle has a perimeter of 36, what could be the lengths of its sides?

Back

Possible side lengths could be 10, 12, and 14, since 10 + 12 + 14 = 36.

Front

What does it mean if a scale factor is greater than 1?

Back

If a scale factor is greater than 1, it means the new figure is larger than the original figure.