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Find the measure of the missing angles

Find the measure of the missing angles-example-1
User Ophiothrix
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3 votes
from what I know
d= 100 because 180-90 (square always equals 90 aka right angle) ( 180 because it’s a straight angle
E= 41 because they are vertical angles
f=139 180- 41 (again a straight angle)
User Damiano Miazzi
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