Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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


Line A straight path of points that goes on forever in two directions.
Ray Part of a line that has one end point and extends forever in one direction.
Parallel Lines In a plane, lines that never cross and stay the same distance apart.
Intersecting Lines Lines that pass through the same point.
Perpendicular Lines Two lines that intersect form square corners or right angles.
Point An exact location in space.
Line segment Part of a line having two end points.
Plane An endless flat surface.
Angle Two rays that have the same endpoint.
Acute Angle An angle whose measures is between 0˚ and 90˚ degrease.
Right Angle An angle whose measure is 90˚.
Obtuse Angle An angle whose measure is between 90˚ and 180˚.
Straight Angle An angle measuring 180˚.
Vertex The common endpoint of the two rays in an angle.
Protractor An instrument that is the result of multiplying two or more factors.
Degrees A unit of measure for angles and temperature.
Polygon A closed plane figure made up of line segments.
Regular Polygon A polygon that has sides of equal length and angles of equal measures.
Triangle A polygon with 3 sides.
Quadrilateral A polygon with 4 sides.
Pentagon A polygon with 5 sides.
Hexagon A polygon with 6 sides.
Octagon A polygon with 8 sides.
Equilateral Triangle A triangle whose sides all have the same length.
Isosceles Triangle A triangle with two sides are the same length.
Scalene Triangle A triangle which no sides are the same length.
Right Triangle A triangle which on angle is a right angle.
Acute Triangle A triangle whose angles are acute angles.
Created by: GINJANINJA018