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

Unit 13

3D Figures

polygon A closed plane figure formed by three or more segments.
diagonal of a polygon A segment that connects any two nonconsecutive vertices of a polygon.
vertex of a polygon A common endpoint of two sides of a polygon.
Face A flat surface of the polyhedron.
Edge A segment that is the intersection of two faces of the figure.
Polyhedron A closed three-dimensional figure formed by four or more polygons that intersect only at their edges.
Vertex The point that is the intersection of three or more faces of the figure.
Base A face of a three-dimensional figure by which the figure is measured or classified.
Prism A polyhedron formed by two parallel congruent polygonal bases connected by lateral faces that are parallelograms.
Pyramid A polyhedron formed by a polygonal base and triangular lateral faces that meet at a common vertex.
Net A pattern of two-dimensional figures that can be folded to make a three-dimensional figure.
Surface Area The total area of all faces and curved surfaces of a three dimensional figure.
Lateral Face A face of a prism or a pyramid that is not a base.
Lateral Area The sum of the areas of the lateral faces of a prism or pyramid, or the area of the lateral surface of a cylinder or cone.
Tetrahedron Triangular pyramid; A polyhedron formed by a polygonal base and triangular lateral faces that meet at a common vertex.
Volume The number of cubic units needed to fill a given space
triangular prism A polyhedron formed by two parallel congruent triangular bases connected by lateral faces that are parallelograms.
cross section A plane shape that results from cutting through a three-dimensional object.
intersection A point or set of points common to two or more geometric figures.
Created by: Mrs Ott
Popular Math 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