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

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Cards

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
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