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.

Remove Ads
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


MVMS MSM2 Angles and Polygons Vocab

acute angle less than 90 degrees
obtuse angle between 90 degrees and 180 degrees
right angle exactly 90 degrees
straight angle exactly 180 degrees
complementary angles two angles that are 90 degrees
supplementary angles two angles that are 180 degrees
vertical angles opposite angles around a vertex *congruent
adjacent angles two angles that share a common side "next to"
alternate interior angles inside the parallel lines and opposite sides of the transversal *congruent
alternate exterior angles outside the parallel lines and opposite sides of the transversal *congruent
corresponding angles on the same side of the parallel lines and the transversal *congruent
triangle 3 sided polygon
quadrilateral 4 sided polygon
pentagon 5 sided polygon
hexagon 6 sided polygon
heptagon 7 sided polygon
octagon 8 sided polygon
nonagon 9 sided polygon
decagon 10 sided polygon
transversal line a line that intersects two parallel lines