Parallel lines
Straight lines that never intersect
Fill in the blank:
Vertical angles are ______
Supplementary angles add up to _______
Equal
180
Lines that never meet that have the same slope
Parallel Lines
The Slope Formula
y2-y1/x2-x1
Complementary Angles
Two angles whose measures add up to 90
What is the value for x in the diagram. What angle rule did you use?
128 degrees, because they are vertical angles which are always congruent
Lines that meet at a point that makes a 90 degree angle. The Negative Reciprical of a slope
Perpendicular Lines
y=mx+b
Supplementary Angles
Angles that add up to 180 degrees
Find the value of x and explain what angle relationship you used to reach your answer.
x = 63
Find the equation of a line that is parallel to y=2x-5 that passes through point (3,10)
y=2x+4
What is the slope of these two points: (5,6) and (8,2)
-4/3
Vertical Angles
Two lines that cross
If the measure of angle 1 is 137, what is the measure of angle 5 and angle 3?
angle 5 = 137, angle 3 = 43
Angles that are congruent that on the opposite sides of each other.
Alternate Angles
What does the m and the b mean in y=mx+b and what are the m and the b of y=3x-8
m is the slope, b is the Intercept, m=3 and b=-8
Perpendicular Lines
Lines intersecting at congruent (right) angles.
Two angles are corresponding. The measure of the first angles is 42 degrees, what is the measure of the second angle?
42
Angles that are on the same side of a transversal line and are supplementary
Consecutive Angles
Determine whether these two Slopes are Parallel, Perpendicular, or neither: (-3,2)(-2,0) and (-1,-5)(1,-4)
Perpendicular