Save
Upgrade to remove ads
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

Definitions

TermDefinition
Acute Angle An angle that measures more than 0 degrees and less than 90 degrees
Vertex a corner point where two or more straight lines, sides, or edges meet in a shape.
Ray a part of a line that has a fixed starting point but no endpoint. It can extend infinitely in one direction
Protractor a tool used to measure angles
Degrees Unit of measurement for temperature and angles.
counter clockwise the opposite direction in which a clock moves
parallel lines Lines that never cross and stay the same distance apart
Line a geometric figure that extends forever in both directions
obtuse angle an angle that measures more than 90 degrees and less than 180 degrees
Parallelogram a four-sided shape (quadrilateral) where both pairs of opposite sides are parallel and equal in length.
Line Segment a geometric figure that has two end points
Rectangle a four-sided flat shape (a quadrilateral) that has four right angles
Line of Symmetry an imaginary line that divides a 2D shape into two identical, matching halves that are mirror images of each other
Perpendicular two straight lines that meet or intersect (cross) to form a right angle
Straight angle An angle that measures exactly 180 degrees
Intersecting lines Two straight lines that meet or cross
Square a flat, 2D shape (a polygon) that has four straight, equal-length sides and four right angles (90-degree corners)
Right Angle An angle that measures exactly 90 degrees
Point a precise location or position in space, represented by a tiny dot and labeled with a capital letter
Trapezoid a four-sided flat shape (quadrilateral) that has exactly one pair of parallel sides
Rhombus a four-sided flat shape (quadrilateral) where all four sides are the same length
Clockwise the direction in which the hands of a clock move, starting from the top and going to the right, down, and around
Created by: user-2034513
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