Definitions
Linear Pair
What is an adjacent pair of supplementary angles (add up to 180 degrees)
X is between D and F
What is
DX + XF = DF
A = A
Reflexive
m angle 1 and m angle 3 are supplementary
m angle 1 + m angle 3 = 180 degrees
Vertical Angles
a pair of opposite angles made by two intersecting lines
M is the midpoint of PQ.
What is
PM is congruent to MQ.
1. Angle 1 and Angle 2 are complementary 1. Given
2. angle 1 + angle 2 = 90 2. ???
Definition of complementary
ABC is a right angle
What is
The measure of angle ABC = 90
What is the segment addition postulate?
What is given 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC
AB = DF
BC = DF
What is
AB = DF
1. BC is congruent to DE 1. Given
2. BC = DE 2. ??
Definition of Congruence
angle 1 and angle 2 form a linear pair
What is angle 1 and angle 2 are supplementary
adjacent angles
(need 3 things in your definition)
two angles that have a common side, common vertex, and don't overlap
BC is congruent to DE
What is
BC = DE
AB = BA
Symmetric
RS is perpendicular to ST
What is RST is a right angle
What is the angle addition postulate?
What is
given 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC
BD is congruent to DC
What is
D is the midpoint of BC
If AB and BC are perpendicular. Given
Then ABC is a right angle. 2. ???
Def. of Perpendicular Lines
m angle ABC = 90
m angle 1 + m angle 2 = m angle ABC