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To Solve for missing angle measures using algebra. Step 1: Figure out if the angles given are congruent,.
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32
0
x
0
Find 2x + 10 and 3x - 85
Solve for the missing angle measures
Equation (^) Solve for x
2x
10
3x 85
If
supplementary
add the
measures & set
them equal to
180
If congruent
set the
measures
equal
To Solve for missing angle measures using algebra
Step 1: Figure out if the angles given are congruent,
supplementary (180) or complementary(90)
Step 3: Then solve for x
Step 4: Find missing angle measures
Step 2: Set up an equation that relates the angles
same
If
complementary
add the
measures & set
them equal to
90
Name___________________________ Date____________
Math 8 Angles: Using Algebra
If all the horizontal lines are parallel,
what is the value of x?
Show your work.
_Answer_____________________
(2x + 50)
(3x)
What is the measure, in degrees, of ABC?
5x + 20
3x
Show your work.
_Answer__________ degrees
by a transversal.
a
b
d
z
y
x
w
Part A
Based on the information in the figure,
complete the table below with the
measures of each angle
Angle
Degree
Measure
a b^ d w
x (^) y z
_Answer_____________________
Part B
Name one pair of supplementary angles.
Line l is a transversal.
m
n
(8x)
(3x + 40)
What is the value of x?
Show your work.
_Answer__________________
