gracielou2002 gracielou2002

15-02-2017
Mathematics

contestada

Find the measure of x.

A)26°
B)30°
C)36°
D)39°

Find the measure of xA26B30C36D39 class=

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apologiabiology apologiabiology

15-02-2017

all interior angles of a triangle add to 180

also a straigt line is 180
find the interior angles

144 is on a straithg line
180-144=36 which is that interior angle

72 is other
180-72=108 which is the other one

36+108+x=180
144+x=180
minus 144 both sides
x=36

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