# Shared Flashcard Set

## Details

Geometry test 1
geometrical stuff
14
Mathematics
02/07/2013

Term
 Postulates
Definition
 1. two distinct points lie on exactly one line2. one may extend a line segment indefinitely in each direction3. given any two distinct points, one may construct a circle with one point as center and the segment joinging the 2nd poin as radius. 4. any 2 right angles are equal in measure to each other5. if a straight line falling on 2 straight lines makes the interior angles on the same side less then 2 right angles, then the two stright line, if extended indefinitely, meet on that side on which the angles are less than the two right angles.
Term
 common notions
Definition
 1. things that are equal to the same thing are also equal to each other.2. if equals are added to equals, then the sums are equal3. if equals are subtracted from equals, the remainders are equal. 4. things that coincide with eachother are equal to each other. 5. the whole is greater than the part.
Term
 distance formula
Definition
 the square root of (x2-x1) squared + (y2-y1)squared
Term
 theorems
Definition
 statemnts that are proven using postulates, axioms, and previously proven statements.
Term
 hypthesis
Definition
 follows the if in an if then statement
Term
 conclusion
Definition
 follows then in an if then statement
Term
 Converse
Definition
 flip the hypthesis and the conclusion
Term
 contrapositive
Definition
 flip the hypthesis and the conclusion, then negate them
Term
 inverse
Definition
 negate the original statement
Term
 how many km in a MI
Definition
 1.609 km per mi
Term
 meter
Definition
 1/10,000,000 of the distance from the north pole to the equator
Term
 360 degrees equals how many radians
Definition
 2 Pi
Term
 180 degrees is how many radians
Definition
 Pi
Term
 90 degrees is how many raidans
Definition
 pi/2
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