−4 + 7(1 − 3m)
3 - 21m
Sum of complementary angles
90 Degrees
Write the equation to find x.
x+37=90
Solve for x.
3x+7=13
x=2
10
10 − 5(9n − 9)
55 - 45n
Sum of supplementary angles
180 Degrees
What is the measurement of angle x?
53 degrees?
solve for x
x=8
A man was outside taking a walk when it started to rain. The man didn’t have an umbrella, and he wasn’t wearing a hat. His clothes got soaked, yet not a single hair on his head got wet. How could this happen?
He was bald!
- (5a – 7b + 9)
-5a + 7b - 9
What is the name of an angle that measures 180 degrees?
straight
What is the measurement angle ABD?
120 degrees
solve for x
3x + 5 = -16
x= -7
David’s parents have three sons: Snap, Crackle, and what’s the name of the third son?
David
7x – (4x + 6)
3x - 6
Vertical angles are always __________
congruent (the same)
Write the equation (don't solve).
28o + xo + 73o = 180o
solve for x
−8−2m=12
x=-10
You’re running a race and at the very end, you pass the person in 2nd place. What place did you finish the race in?
You finished in 2nd place.
−7(n + 3) − 8(1 + 8n)
-71n - 29
how do we set up an equation for vertical angles?
set the angles equal to eachother
What is the measurement of angle x?
79o
solve for x
5 + 14x = 9x - 5
x=-2
What vehicle is spelled the same backwards and forwards?
racecar