Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Geometry

Triangles, Area, Volume

TermDefinition
Acute Angle angle smaller than 90 degrees
Acute Triangle a triangle with all acute angle
Adjacent Angle an angle next to another angle
Complementary Angles two angles that add up to 90 degrees
Congruent having the same measurements
Degree the measure of an angle
Equilateral Triangle a triangle with all three sides and angles are equal
Isosceles Triangle a triangle with two equal sides
Obtuse Angle angle larger than 90 degrees
Obtuse Triangle a triangle with one obtuse angle
Opposite Side Angle Theorem the largest angle is opposite the longest side, the smallest side is opposite the smallest angle, etc.
Right Angle angle measuring exactly 90 degrees
Right Triangle a triangle with one right angle
Scalene Triangle a triangle with no equal sides
Triangle Inequality Theorem two sides of a triangle, when added, have to be greater than the third side
Supplementary Angles two angles that add up to 180 degrees
Area the amount of space the shape covers; measured in square units
Base the bottom line of a 2D shape
Cube a 3D shape when all faces are the same size
Decompose to break down a shape into different shapes
Formula a mathematical rule that is written with symbols
Height how tall a shape is from the bottom to the top; has to be a straight line
Length how long a shape is from one side to the other
Line Segment a straight line from end point to end point; vertex to vertex
Parallelogram a shape with two pairs of parallel lines
Quadrilateral any shape with four sides
Rectangle a shape with four straight lines and four right angles
Rectangular Prism a 3D shape that has 6 faces, two of which are rectangles
Trapezoid a four sided shape that has only one pair of parallel sides
Width distance across from side to side
Vertex the point where two lines meet on a shape
Volume the amount of space an object takes up
Created by: kcrawford23
Popular Math sets

 



Voices

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:
Retries:
restart all cards