Ch. 5 Proportional Relationships Vocabulary

Front

What are corresponding angles in similar figures?

Back

Corresponding angles are angles that are in the same position in two different figures that are similar. They are congruent (equal in measure).

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio between two proportional quantities, often represented as 'k'. It is also known as the unit rate.

Front

What happens to a figure when the scale factor is greater than one?

Back

When the scale factor is greater than one, the new figure is an enlargement of the original figure.

Front

What is a scale factor?

Back

A scale factor is the number you multiply by the sides of a figure to create a similar figure.

Front

What does it mean if two figures are not proportional?

Back

If two figures are not proportional, it means that the ratios of their corresponding sides are not equal.

Front

How do you find the constant of proportionality in a table of values?

Back

To find the constant of proportionality in a table, divide the output value by the input value for any pair of corresponding values.

Front

What is the relationship between unit rate and constant of proportionality?

Back

The unit rate is the same as the constant of proportionality; it represents the amount of one quantity per one unit of another quantity.

Front

If the scale factor is less than one, what type of transformation occurs?

Back

If the scale factor is less than one, the transformation is a reduction of the original figure.

Front

What is the formula for finding the area of similar figures?

Back

The area of similar figures is proportional to the square of the scale factor.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they simplify to the same fraction.