# Sign up for an account

Already have a Quizlet account?

Log in.

###
Proportion

A statement that two ratios are equal.

###
Similarity Ratio

The ratio of the lengths of two corresponding sides.

###
Cross-Product Property

The product of the means is equal to the product of the extremes.

###
Golden Rectangle

A rectangle that can be divided into a square and a rectangle that is similar to the original triangle.

###
Similar

Corresponding angles are congruent and corresponding sides are in proportion.

###
AA Similarity

Two triangles are similar if two pairs of corresponding angles are congruent.

###
SAS Similarity

Two triangles are similar if an angle of one triangle is congruent to an angle of a second triangle, and the sides including those angles are in proportion.

###
SSS Similarity

Two triangles are similar if the corresponding sides of two triangles are in proporiton.

###
Side-Splitter Theorem

If a line is parallel to one side of a triangle and intersects the other two sides, then it divides those sides proportionally.

### Please allow access to your computer’s microphone to use Voice Recording.

## We can’t access your microphone!

### Click the icon above to update your browser permissions and try again

Example:

### Reload the page to try again!

Reload

## Press Cmd-0 to reset your zoom

## Press Ctrl-0 to reset your zoom

### It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

## Your microphone is muted

### For help fixing this issue, see this FAQ.