Answered

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Need help plzzz???!?????!

Need Help Plzzz class=

Sagot :

mreyna6

Answer:

137

Step-by-step explanation:

First start with what you know.  The measure of the interior angles of a triangle total to [tex]180^{o}[/tex] so 51 + 2x + x = 180, then 51 + 3x = 180, 3x = 129, so

x = 43, the exterior angle is on a straight line with x so

x + exterior angle = 180 [since they are supplementary], since x = 43 then

43 + e = 180, so e has to be 137

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