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Geometry: Unit one

QuestionAnswer
Part of a line with one endpoint Ray
Two rays with the same endpointthat open in exact opposite directions Opposite Rays
On the same line Colinear
On the same plane Coplanar
A rule that is always true without the need for explanation Postulate/Axiom
A rule that is true but needs proof Theorum
Finding the distance between two points using coordinates from a number line Ruler Postulate
Segments that are the same length Congruent Segments
Little +Little = Big Segment Addition Postulate
Angles that have the same measure Congruent Angles
Two or more parts can be added together to get the measure of the larger angle Angle Addition Postulate
Two angle that share the vertex and a common side Adjacent Angles
Two angles whose sum is 90 degrees Complementry Angles
Two angles whose sum is 180 degrees Supplementry Angles
Two angles that are ajacent and supplementry (make a straight line) Linear Pairs
Two angles that share a vertex and are made by opposite Vertical Angles
All right angles are congruent Right Angles Congruence Theorem
If two angles are supplementary to the same angle (or congruent angles) then the two angles are are congruent Congruent Supplements Theorum
If angle 4 and angle 5 are compliments than the measure of angle 4 + the measure of angle 5 = 90 degrees Congruent Compliments Theorum
If two angles are a linear pair, than the two angles are supplementry (add up to 180 degrees) Linear Pair Postulate
Vertical angles are congruent (equal measure) Vertical Angles Congruence Theorum
Lines not on the same plane (never intersect) Skew Lines
With a line and a point not on the line, there exsits exactly one line paralell through that point Parellel Postulate
With a line and a point not on the line, there exsists exactly one line perpendicular through that point Perpendicular Postulate
A line that intersects two or more lines Transversals
Pairs of angles that share the same location and different intersection Corresponding Angles
Pairs of interior angles on opposite sides of the transversal Alternate Interior Angles
Pair of exterior angles on opposite sides of the transversal Alternate Exterior Angles
Pairs of interior angles on the same side of a transversal Consecutive Interior Angles
If parralell lines are both intersected by a transversal then corresponding angles are congruent Corresponding Angles Theorum
If parralell lines are both intersected by a transversal than alternate interior angles are congruent Alternate Interior Angles Theorum
If parralell lines are both intersected by a transversal than alternate exterior angles are congruent Alternate Exterior Angles Theorum
If parralell lines are both intersected by a transversal than interior angles are supplementry (add to 180) Consecutive Interior Angles Theorum
If two lines are both parrallel to the same line, then they are parallel to eachother. Transitive Property of Parralell Lines
Created by: user-2013834
 

 



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