Grade 7 Unit 1: Scale Copies & Scale Drawings

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or a place that is proportionally reduced or enlarged to a specific scale.

Front

What is a scaled copy?

Back

A scaled copy is a figure that is an exact replica of another figure, but is either larger or smaller based on a scale factor.

Front

What does scale factor determine?

Back

The scale factor determines how much larger or smaller a figure will be when creating a scaled copy.

Front

If the scale factor is less than one, what happens to the figure?

Back

If the scale factor is less than one, the new figure will be smaller than the original.

Front

What is the scale factor if a figure is enlarged by 200%?

Back

The scale factor is 2, because 200% means the figure is twice as large.

Front

How do you find the scale factor between two figures?

Back

To find the scale factor, divide the length of a side of the scaled copy by the length of the corresponding side of the original figure.

Front

What is the relationship between corresponding sides in scale drawings?

Back

Corresponding sides in scale drawings are proportional, meaning their lengths have the same ratio.

Front

What does it mean if two figures are similar?

Back

Two figures are similar if they have the same shape but different sizes, and their corresponding angles are equal.

Front

How can you tell if two figures are scaled copies of each other?

Back

You can tell if two figures are scaled copies if their corresponding angles are equal and the lengths of their corresponding sides are proportional.

Front

What happens to the area of a figure when the scale factor is doubled?

Back

When the scale factor is doubled, the area of the figure increases by a factor of four.