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

Lines in Triangles

Relationships in Triangles

perpendicular bisector passes through the midpoint of the side and is perpendicular to that side
circumcenter the point where all three perpendicular bisectors meet
angle bisector divides an angle in half
incenter the point where all three angle bisectors meet
median a segment connecting a vertex of a triangle to the midpoint of the opposite side
centroid the point where all three medians meet
altitude a segment from the vertex of a triangle that is perpendicular to the opposite side
orthocenter the point where all three altitudes meet
midsegment segment formed by connecting the midpoints of any two sides of a triangle
Created by: Mrs.Stichter