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


Point A location in space - a dot on a piece of paper
Arc Part of a curve
Line Connects two points via the shortest path and continues indefinitely (forever) in both directions
Line Segment Part of a line between two points
Perpendicular Line Segment Line Segments that intersect (cross) at an angle of 90°
Acute Angle An angle that measures less than 90°
Parallel Line Segments
Chord A line segment joining two points on a curve.
circumference Distance around a circle (the perimeter)
Diameter A line segment (or length) joining two points on a circles circumference and passes through the circle's center (twice the length of the radius)
Radius Distance (line segment) from center of a circle to any point on that circle's circumference.
Equilateral Triangle A triangle with all three sides of equal length (each internal angles = 60°)
Isosceles Triangle A triangle with two equal length sides (and two equal internal angles)
Obtuse Angle An angle that measures more than 90°
Right Angle An angle that measures 90°
Vertex Point at which two line segments
Scalene Triangle A triangle with all three sides with different lengths
intersect (forming an angle)
Created by: leifmilliron