Angles Review of 7th
Angles like these add up to 180: they are called 
supplementary angles
x = 150
xο
30ο
Remember angels like these add up to 90 degrees:
they are called complementary angles
x = 60
30ο
xο
so x=40 because 140+40=180
y = 140 because it is vertical 
to 140
140ο
z
y
x
Find the value of x:
50ο
xο
Find the value of X:
xο
60ο
Find the value of x
z=
y=
x= 
120ο
z
y
x
 Find the value of x:
xο
xο
The complementary angle would measure 
Find the measure of an angle complementaryto an angle with a measure of 10 degrees. 
degrees.
The supplementary angle would measure 
Find the measure of an angle supplementary to an angle with a measure of 85 degrees. 
degrees. 
What is the measure of angle CAD?
CAD = 
What is the measure of angle BAG? 
BAG =
What is the measure of angle EOB?  
EOB =110
What is the measure of angle BOH?
BOH = 
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