Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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 chapter 1

chaoter 1 only

point A dot in a specific location with no dimension
line A straight path with no thickness that continues in both directions
plane a flat surface with no thickness and extends forever
line segment portion of a line consisting of 2 points
ray a portion of a line that starts at a point and continues forever in 1 direction
parallel Lines that lie on the same plane but do not intersect
coplaner Points that lie on the same plane
collinear Points that lie on the same line
postulate a statement that is accepted as true without proof
segment addition postulate if B is between A and C then AB+BC = AC
distance formula (x2-x1)2+(y2-y1)2
midpoint The point that divides the line segment into two segments that have the same length
segment bisector A line, ray, or other figure that passes through the midpoint of a segment
angle figure formed by 2 rays with the same endpoint
vertex common end point
rays of angle side of the angle
degrees common measurement for circular arcs
right angle 0<m<A<90
acute angle m<A=90
obtuse angle 90 <m<A<180
straight angle m<A = 180
angle bisector a ray that divided an angle into two angles that both have the same measure
angle addition postulate if S is interior of <PQR then m<PQR=m<PQS + m< SQR
transformation a function that changes the position shape and/or size of a figure
preimage A figure that is used as the input of a transformation
image The output
rigid motion a transformation that changes the position of a figure witnout changing the size or shape of the figure
conjecture a statement that is believed to be true
Inductive reasoning The process of reasoning a rule or statement may be true by looking at specific cases
deductive reasoning the process of using logic to prove whether all cases are true
theorem A statement that you can prove is true using a series of logical steps
counterexample an example that shows a conjecture to be false
conditional statement a statement that can be written in the form "if p then q" where p is hypothesis and q is the conclusion
linear pair A pair of adjacent angles whose non common sides are opposite rays.
addition property if a=b then a + c = b + c
subtraction property if a = b then a - c = b - c
multi property if a = b then ac = bc
division property if a = b and c = 0 then a/c = b/c
Reflexive property a = a
Symmetric property If a = b then b = a
transitive property if a = b and b = c then a = c
substitution property if a = b then b can be substituted for a in any expression
The linear Pair Theorem if two angles form a linear pair then they are supplementary m<3 + m<4 = 180
Created by: user-1713612
Popular Math sets




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:
restart all cards