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

7th Triangle Vocab

Acute Angle angle that is less than 90 degrees.
Obtuse Angle angle that is more than 90 degrees and less than 180 degrees
Right Angle angle that is exactly 90 degrees. A small square is the symbol for this angle.
Straight Angle angle that is exactly 180 degrees
Scalene Triangle triangle that has NO congruent sides
Vertex the common endpoint of 2 rays (point where 2 rays/sides meet and form angle)
Degrees unit used to measure angles.
Acute Triangle triangle that has all acute angles.
Right Triangle triangle that has one right angle.
Obtuse Triangle triangle that has one obtuse angle.
Angle 2 sides/rays with a common endpoint.
Isosceles Triangle triangle that has at least 2 congruent sides
Equilateral Triangle triangle with all 3 congruent sides.
Sum of angles in a triangle 180 degrees
Complimentary Angles Sets of angles that add up to 90 degrees.
Supplementary Angles= Sets of angles that add up to 180 degrees
Triangle A shape with 3 sides and 3 angles. The sum of the angles is 180 degrees.