Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Ch.4 App.Proportions

Good Luck!

congruent angles angles that have the same measure
conversion factor rates equal to 1
cross products two ratios are found by multiplying the denominator of one ratio by the numerator of the other ratio
dilation is a transformation where the original figure and its image are similar
enlargement a dilation with a scale factor greater than 1
indirect measurement uses proportions and similar triangles to measure distances that would be difficult to measure directly
proportion is an equation stating that two ratios are equal
rate is a ratio that compares two quantities measured in different units
reduction a dilation with a scale factor less than 1
scale is the ratio that compares a length in a drawing to the corresponding length in the actual object
scale factor the ratio of the dimensions of the image to the dimensions of the original figure
scale model is an enlarged or reduced model of an object that is similar to the actual object
similar figures have the same shape but not necessarily the same size
similar polygons if the corresponding angles of two polygons have the same measure and the lengths of their corresponding sides are proportional
unit rate the rate for one unit of a given quantity
Created by: cpasteris