Vocab List 1 Flashcards
Angle
2 rays that share same endpoint
Vertical Angles
2 angles with sides that are opposite rays with a common vertex
Adjacent angles
2 angles that have one shared side and common vertex
Right angles
Angle with 90 degrees
Perpendicular
2 lines that form a right angle
Linear Pair
2 adjacent angles with non common sides with opposite rays
Supplementary
Sum of their angles measure 180 degrees
Complementary
2 angles with sum of angles that are 90 degrees
Angle Bisector
A ray that splits an angle equally down the “middle”
Congruent
2 angles that have the same measure
Linear Pair
two adjacent angles that sum to 180 degrees
Angle Addition postulate
2 angles are adjacent if sum of measures equal to angle formed by non-adjacent sides
Linear Pair postulate
2 angles are linear pair they are supplementary
Congruent Supplements Theorem
If two angles are supplements of the same angle, then the two angles are congruent.
Congruent Complements Theorem
If two angles are complements of the same angle, then the two angles are congruent.
Right angle Congruence Theorem
2 angles are right angles so those angles are congruent
Angle Bisector theorem
when an angle in a triangle is split into two equal angles, it divides the opposite side into two parts
Vertical angle Theorem
2 angles are vertical then angles are congruent to each other
Theorems of Perpendicular Lines Part 1
2 lines are perpendicular, so they form congruent angles
Theorems of Perpendicular Lines Part 2
2 lines for a congruent adjacent angles so they are perpendicular
Theorems of Perpendicular Lines Part 3
