Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
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


Circle Properties

Minor Arc Arc with a measure less than 180 degrees
Major Arc Arc with a measure of more than 180 degrees
Semi-circle Half a circle; Arc with a measure of 180 degrees
Central Angle Angle whose vertex is the center of the circle
Inscribed Angle Angle whose vertex is on the circle
Tangent A line that touches the circle in exactly one point
Chord A segment whose endpoints are on the circle
Secant A line that crosses a circle twice
Intercepted Arc arc formed by angles or intersecting chords
Measure of intercepted arcs of central angle: arc measure is the same as angle measure of inscribed angle: arc measure is twice the angle measure
Vertical angles Angles formed by intersecting segments with a common vertex that are across from each other
Created by: fjohnson