Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why

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 associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




share
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

Geometry Unit

Angles, Triangles

TermDefinition
ray shared by adjacent angles
sum the answer to an addition problem
intersecting lines lines that cross at a point
vertical angles angles which are formed by intersecting lines and have equal measures
adjacent angles angles that are next to each other
supplementary angles angles whose measures have a sum of 180 degrees
complementary angles angles whose measures have a sum of 90 degrees
acute angle has a measure less than 90 degrees
obtuse angle has a measure more than 90 degrees, but less than 180 degrees
right angle has a measure of exactly 90 degrees
acute triangle a three sided shape with all angles measuring less than 90 degrees
right triangle a three sided shape with one angle measuring exactly 90 degrees
obtuse triangle a three sided shape with one angle measuring greater than 90 degrees
isosceles triangle a three sided shape with two congruent sides
equilateral triangle a three sided shape with all congruent sides
scalene triangle a three sided shape with all sides measuring different lengths
triangle inequality theorem Helps us to know if three sides will form a triangle. The sum of the two smaller sides, must be greater than the largest side.
No, 2 + 5 needs to be greater than the third side. Will sides of 2, 5, and 7 form a triangle?
No, 4 + 10 needs to be greater than the third side. Will sides of 4, 15, and 10 form a triangle?
Yes, 4 + 5 is greater than the third side. Will sides of 4, 5, and 6 form a triangle?
2<x<10 If two sides of a triangle are 6 and 4, give the range of values for the third side.
180 degrees What is the sum of all the measures of the angles of a triangle?
congruent having exactly the same shape, size or measure
5<x<11 If two sides of a triangle are 8 and 3, give the range of values for the third side.
15<x<55 If two sides of a triangle are 20 and 35, give the range of values for the third side.
Created by: braggk