Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
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

Area & Surface


Triangle a polygon with three edges and three vertices
area the amount of space that the surface of a place or shape covers
base a side of a plane figure or face of a solid (especially the part on which it rests)
decompose to break down or be broken down into smaller shapes
height the measurement from base to top (perpendicular to the base)
net A pattern that you can cut and fold to make a model of a solid shape
vertex a corner or a point where lines meet
Surface area The total area of the surface of a three-dimensional object
Edge of 3D figure where two faces meet
polygon any 2-dimensional shape formed with straight lines
Face of 3D figure a 2D shape that makes up one surface of a 3D shape
perimeter the distance around a two-dimensional shape
Created by: sjannah