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Postulates/theorems

TermDefinition
Ruler Postulate The points on a line can be matched on to one with real numbers. The real number that corresponds to a point is the coordinate of the point. The distance between points A and B, written as AB, is the absolute value of the diff of the corrdiantes A and B
Segment Addition Postulate If B is between A and C, then AB+BC=AC. if AB+BC=AC, then B is between A and C
Protractor Postulate Consider ray OB and a point A on one side of the line OB. The rays of the form ray OA can be matched one to one with the real numbers of 0 to 180
Angle Addition Postulate if P is in the interior of angle RST, then the measure of angle RST is equal to the sum of the measures of angle RSP and angle PST
Two Point Postulate Through any two points, there exists exactly one line
Line Point Postulate A line contains at least two points
Line Intersection Postulate If two lines intersect, then their intersection is exactly one point
Three Point Postulate Through any three noncollinear points, there exists exactly one plane
Plane-Point Postulate A plane contains at least three noncollinear points
Plane-Line Postulate If two points lie in a plane, then the line containing them lies in the plane
Plane Intersection Postulate If two planes intersect, then their intersection is a line
Linear Pair Postulate If two angles form a linear pair , then they are supplementary
Parallel Postulate If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line
Perpendicular Postulate If there is a line and a point not on the line, then there is exactly one line through the point perpendicular to the given line
Reflextive Property For any segment AB, segment AB is congruent to segment AB. for any angle A, angle A is congruent to angle A
Symmetric Property If segment AB is congruent to segment CD, the segment CD is congruent to segment AB. If angle A is congruent to angle B, then angle B is congruent to angle A
Transitive Property If segment AB is congruent is segment CD and segment CD is congruent to segment EF, then segment AB is congruent to segment EF. If angle A is congruent to angle B and angle B is congruent to angle C, then angle A is congruent to angle C
Right Angles Congruence Theorem All right angles are congruent
Congruent Supplements Theorem If two angles are supplementary to the same angles(or to congruent angles)then they are congruent
Congruent Complements Theorem If two angles are complementary to the same angle ( or to congruent angles), then they are congruent
Vertical Angles Congruence Theorem Vertical angles are congruent
Corresponding Angles Theorem If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent
Alternate Interior Angles Theorem If two parallel lines are cut by a transversal , then the pairs of alternative interior angles are congruent
Alternate Exterior Angles Theorem If two parallel lines are cut by a transversal , then the pair of alternate exterior angles are congruent
Consecutive Interior Angles Theorem If two parallel lines are cut by a transversal, then the pair of consecutive interior angles are supplementary
Alternate Interior Angles Converse If two lines are cut by a transversal so the alternate interior angles are congruent, then the line are parallel
Alternate Exterior Angles Converse If two lines are cut by a transversal so the alternate exterior angles are congruent, then the lines are parallel
Consecutive Interior Angles Converse If two lines are cut by a transversal so the consecutive interior angles are supplementary, then the lines are parallel
Transitive Property Of Parallel Lines If two lines are parallel to the same line, then they are parallel to each other
Linear Pair Perpendicular Theorem If two line intersect to from a linear pair of congruent angles, then the lines are perpendicular
Perpendicular transversal Theorem In a plane, if a transversal is perpendicular to one of two parallel lines, then it is perpendicular to the other line
Lines Perpendicular To Transversal Theorem In a plane, if two lines are perpendicular to the same line, then they are parallel to each other
Slopes Of Parallel Lines In a coordinate plane, two distinct non-vertical lines are parallel if and only if they have the same slope . Any two vertical lines are parallel
Slopes Of Perpendicular Lines In a coordinate plane, two non-vertical lines are perpendicular if and only if the product of their slopes is -1. Horizontal lines are perpendicular to vertical lines.
Corresponding Angles Converse If two lines are cut by a transversal so the corresponding angles are congruent, then the lines are parallel
Created by: Paytyn24
 

 



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