Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Triangle Congruence

QuestionAnswer
Congruence Figures or shapes that have the same size, shape and measure
Equilateral triangle A triangle with three congruent sides
isosceles triangle a triangle with two equal sides
scalene triangle a triangle with no congruent sides
Triangle Sum Theorem The sum of the measures of the interior angles of a triangle is 180 degrees
Exterior Angle Theorem The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles.
Isosceles Triangle Theorem If 2 sides of a triangle are congruent, then the angles opposite those sides are congruent
corresponding parts matching parts of congruent polygons
CPCTC corresponding parts of congruent triangles are congruent
Congruency Statement Statement that tells which parts in one triangle correspond to the parts in the other triangle
SSS Postulate If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.
SAS Postulate If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.
HL Postulate If a hypotenuse and leg of one right triangle are congruent to the corresponding hypotenuse and leg of a second right triangle, then the triangles are congruent.
ASA Postulate If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.
AAS postulate If two angles and a non-included side of one triangle are congruent to two angles and a non-included side of another, then the two triangles are congruent.
Created by: rmosley
Popular Math sets

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards