Review for Proportions and Similar Figures

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or 'a:b'.

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, meaning their corresponding angles are equal and their corresponding sides are proportional.

Front

How do you determine if two ratios form a proportion?

Back

Front

What is the definition of proportionality?

Back

Proportionality refers to the relationship between two quantities where their ratio remains constant.

Front

Back

Front

What is the scale factor in similar figures?

Back

The scale factor is the ratio of the lengths of corresponding sides of two similar figures.

Front

How do you find the missing value in a proportion?

Back

To find the missing value in a proportion, use cross multiplication and solve for the unknown.

Front

What is the relationship between the angles of similar triangles?

Back

The corresponding angles of similar triangles are equal.

Front

What is an example of a ratio?

Back

An example of a ratio is the ratio of bananas to apples, which can be expressed as 2:7.

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. If the scale factor is k, then the area ratio is k^2.