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

Chapter 6 - Geo.

Chapter 6 Vocabulary - Similarity

center of dilation in dilation, the fixed point about which the figure is enlarged or reduced
dilation a transformation that stretches or shrinks a figure to create a similar figure
enlargement a dilation with a scale factor larger than one
extremes of a proportion the first and last terms of a proportion
geometric mean for two positive numbers a and b, the positive number x that satisfies a/x = x/b; so x squared = ab and x = the square foot of ab
means of a proportion the middle terms of a proportion
proportion an equation that states that two ratios are equal
ratio of a to b a comparison of two numbers using division; the ratio of a to b, where be does not equal 0, can be written as a to b, as a:b, or as a/b
reduction a dilation with a scale factor between 0 and 1
scale a ratio that describes how the dimensions in a scale drawing are related to the actual dimensions of the object
scale drawing a drawing that is the same shape as the object it represents
scale factor of a dilation in a dilation, the ratio of a side length of the image to the corresponding side length of the original figure
scale factor of two similar polygons the ratio of the lengths of two corresponding sides of two polygons
similar polygons two polygons such that their corresponding angles are congruent and the lengths of corresponding sides are proportional
Created by: kgatling