# Shared Flashcard Set

## Details

Geometry Test on 10-4-07
Definitions, PRoperties, Postulates, & Theorems
16
Mathematics
Not Applicable
10/02/2007

Term
 Midpoint Theorem
Definition
 if m is the midpoint of line AB, then line AB = 1/2(AB) & line MB = 1/2(AB)
Term
 Angle Bisector Theorem
Definition
 if line BD bisects angle ABC, then angle ABD = 1/2 (angle ABC) and angle DBC = 1/2 (angle ABC)
Term
 Definition of complementary angles
Definition
 pair of angles whose sum = 90 degrees
Term
 Definition of supplementary angles
Definition
 pair of angles whose sum = 180 degrees
Term
 Definition of vertical angles
Definition
 pair of angles formed by 2 intersection lines; those angles ARE NOT adjacent (don't share a line)
Term
 Vertical Angle Theorem
Definition
 vertical angles are congruent
Term
 Definition of Perpendicular Lines
Definition
 2 lines that intersect to form a right angle
Term
 If 2 lines are perpendivular
Definition
 then they form congruent adjacent angles
Term
 If two lines form congruent adjacent angles
Definition
 then they are perpendicular
Term
 If the exterior sides of 2 acute adjacent angles are perpendicular
Definition
 then the angles are complementary
Term
 Sara Allan Theory
Definition
 if 2 lines are perpendicular then the angles formed measure 90 degrees
Term
 Complementary Angle Theorem
Definition
 Complements of angles that are congruent are congruent
Term
 SPEW
Definition
 sum of all the parts (either segments of angles) equals a whole
Term
 Definition of a midpoint
Definition
 If B is the midpoint of AC, then AB = BC
Term
 Definition of an Angle Bisector
Definition
 If line BZ bisects angle ABC, then line AB = line BC
Term
 Definition of a right angle
Definition
 An angle that measures to 90 degrees
Supporting users have an ad free experience!