and
two angles that are across from one another are called?
vertical angles
If 2 lines are parallel they have _______ slope.
same
What are parallel lines?
two lines that do not intersect and have the same slope
Supplementary angles add up to?
180 degrees
What is the inverse of the statement: If it is Thursday then I have geometry class.
If it is not thursday then I do not have geometry class.
What is the relationship between angle 2 and angle 8
Alternate exterior
If I have the two equations:
y = 4x -6
y = -1/4x +10
What kind of lines are these?
perpendicular
What lines can i prove parallel if <1 = <9
a and b
if angle 1 is 45 degrees what is the measure of angle 14
45 degrees
What is the contrapositive of the statement: If it is raining, then I have an umbrella
If i do not have my umbrella, then it is not raining.
What is the relationship between angle 4 and angle 6?
Alternate interior angles
Find the slope of the lines AC and BD
A(1, 0) C(-3, -2)
B(-4, -5) D(8, 7)
AC= 1/2
BD= 12/12 = 1
What lines can I prove parallel if <12 = <14
M and N
If angle 7 is 100 degrees what is the measure of angle 11?
80 degrees
Use the law of syllogism to make a conclusion:
If it is saturday, then I am at the movies.
If I am at the movies, then I get popcorn
If it is saturday, then I get popcorn
What is the relationship between angle 3 and angle 6?
Consecutive interior angles
Write an equation for 2 parallel lines that have slopes of 2 and y intercepts at 0 and 4
y = 2x
y = 2x + 4
Why are A and B parallel if <3 + <6 = 180
they are consecutive interior angles
If angle 2 is 3x + 7 and angle 10 is 2x + 20 what is the value of x
13
***
What is the relationship between angle 5 and angle 2
supplementary angles
A line has an equation of y = 3x + 2
Write an equation for a perpendicular line that passes through (3, 5)
y = -1/3x - 5
What lines are parallel if <10 = <12
none because they are vertical angles
If angle 3 is 2x + 10 and angle 16 is 12x - 30
what is the measure of angle 3
18 degrees