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15 Cards in this Set

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Perpendicular
Lines, rays, or segments, that intersect at a right/ 90? angle.
Angle assumptions:
You cannot assume right angles
You cannot assume if a line is perpendicular
Complementary Angles
Two angles whose sum is 90?
Supplementary Angles
Two angles whose sum is 180?
complementary/ supplementary theorems
•If angles are supplementary to the same angle they are congruent.
•If angles are supplementaryn to congruent angles, they are congruent.
•If angles are complementary to the same angle they are congruent.
•If angles are complementary to congruent angles they are congruent.
If a(n) segment/ angle is addeded to 2 congruent segments/ angles, the sums are congruent
Addition Property
If a(n) (congruent) segment/ angle is subtracted from congruent segments/ angles, the differences are congruent
Subtraction property
If segments/ angels are congruent, their like multiples are congruent.
Multiplication Property
If segments/ angles are congruent, their like divisions are congruent.
Division Property
If angles/ segments are congruent to the same/ congruent angles/ segments, they are congruent to eachother.
Transitive Property
Vertical Angles Theorem
Vertical angles are congruent
If <1 is complementary to <2 and <2 is congruent to <3, the <1 is complementary to <3.
Subsitution Property
Opposite rays
Same vertex (endpoint) opposite directions
Vertical angles
Two angles are vertical angles if the rays forming the sides of one and the rays forming the sides of another are opposite rays.
Can vertical angles be assumed?
Yes