3 years ago

Find the value of x x=

Mathematics

1 answer:

Lena [83]3 years ago

7 0

9514 1404 393

Answer:

x = 65

Step-by-step explanation:

The sum of exterior angles of a polygon is 360°.

40 + x + 77 + 2x + 45 = 360

3x + 165 = 360 . . . . simplify

x + 55 = 120 . . . . . . divide by 3

x = 65 . . . . . . . . . . . subtract 55

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