Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
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.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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


Ratio A comparison of two numbers by division
Equivalent Ratios Two ratios that name the same number
Rate A ratio involving two quantities in different units
Unit Rate The rate for one unit of a given quantity
Unit Cost A unit rate that gives the cost per unit
Proportion An equation stating that two ratios are equal
Cross Products You can find this of two ratios by multiplying the numerator of each ratio by the denominator of the other ratio
Scale The ratio that compares a length in a drawing or model to the length in an original object
Percent A ratio that compares a number two one-hundred
Circle Graph A graph id data in which the entire circle represents the whole
Point A location in space. It has no size.
Line A series of points that extends in two opposite directions without end.
Segment Consists of two endpoints and all the points of the line between the endpoints.
Ray Consists of one endpoint and all the points of the line on one side of the endpoint
Plane A flat surface with no thickness that extends in all directions on a surface
Intersecting Lines Lines that have exactly one point in common
Parallel Lines Lines that have no points in common and never will.
Skew Lines Lines that are not parallel and do not intersect.
Angles A figure formed by two rays with a common endpoint
Vertex The point of intersection of two sides of an angle or figure
Degrees To measure angles in units.
Acute Angles Measures less then ninety degrees.
Right Angles Measures ninety degrees.
Obtuse Angles Measures between ninety and one hundred eighty degrees
Straight Angles Measures one hundred eighty degrees
Perpendicular Lines Lines that intersect and form right angles
Complementary Angles The sum of the measures of two angles is ninety degrees
Supplementary Angles The sum of the measures of two angles that equal one hundred eighty degrees
Vertical Angles Two intersecting lines
Congruent Angles Angles with equal measures
Transversal A line that intersects two or more lines
Triangle A closed figure made of three line segments that meet only at their endpoints.
Acute Triangle Three acute angles
Obtuse Triangle One obtuse angle
Right Triangle One right angle
Equilateral Triangle Three congruent sides
Isosceles Triangle At least two congruent sides
Scalene Triangle No congruent sides
Congruent Segments Segments that are the same length
Polygon A closed figure that has three or more line segments that do not cross
Regular Polygons A polygon with all sides congruent and all angles congruent
Irregular Polygons
Created by: Lydia Struble
Popular Standardized Tests sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards