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

Chapter 8 vocab

Williams 7c

Converse If you reverse parts of the Pythagorean theorem, you have performed its converse.
Deductive reasoning Using facts, rules, definitions, or laws to make conjectures from given situations.
Distance formula The distance d between two points with coordinates (x1-y1) and (x2-y2) is given by finding the square root of (x2-x1)^2 + (y2-y1)^2 =d
Formal proof Statements and reasons organized into two columns.
Hypotenuse The side opposite the right angle. It is the longest side of the triangle.
Inductive reasoning The process of making a conjecture after observing several examples.
Informal proof A paragraph proof.
Legs The sides that form a right angle.
Paragraph Proof Writing a paragraph to explain why a conjecture is true.
A Proof A logical argument where each statement is justified with a reason.
Pythagorean theorem Describes the relationship between the lengths of the legs and the hypotenuse for any right angle.
Theorem Once a statement or conjecture has been proven it is called a theorem.
Two-Column proof Formal proof organized into two columns.Each step is called a statement.
Created by: Yasmin Lopez