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vitfil [10]
3 years ago
5

A) Find the value of x.

Mathematics
1 answer:
Tcecarenko [31]3 years ago
5 0
It is a pentagon. The sum of all angles of pentagon is 540°.

A) (x+10)+(2x-10)+(x-25)+(x+20)+(x-13)=540
    x=93

B) x+20 = 93+20 = 113°. The adjacent exterior angle is 180 - 113 = 67°
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