Answered

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Please help I have no idea how to do this!

Please Help I Have No Idea How To Do This class=

Sagot :

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Answer:

D. <B = 141°

Step-by-step explanation:

The sum of interior angles of a polygon is

(n-2)*180, where n is the number of sides!

Sum of angles for our polygon that has 7 sides must be:

(7-2) *180 = 5*180 = 900

Sum of angles that are in the picture are:

120+129+130+142+90+148+ <B = 759 + <B

<B = 900 -759 = 141°

Check our work:

120°+129°+130°+142°+90°+148°+ 141° = 900°✅

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