U6 Proportions Review

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve for a variable in a proportion?

Back

To solve for a variable in a proportion, cross-multiply and then isolate the variable.

Front

What does it mean if two figures are similar?

Back

Two figures are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is a scale factor?

Back

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

Front

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

Back

If the scale factor is less than one, the figure is reduced.

Front

What are corresponding sides in similar figures?

Back

Corresponding sides are the sides of two or more figures that are in the same relative position.

Front

How do you find the missing length in a proportion?

Back

Set up a proportion using the known lengths and solve for the missing length.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

What is the formula for finding a missing side in similar triangles?

Back

If triangle ABC is similar to triangle DEF, then AB/DE = AC/DF = BC/EF.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities.