jennaloves2019
jennaloves2019 jennaloves2019
  • 03-06-2019
  • Mathematics
contestada

SOMEONE PLEASE HELP ME!!!!!

Choices:
A: 35
B: 135
C: 45
D:55

SOMEONE PLEASE HELP ME Choices A 35 B 135 C 45 D55 class=

Respuesta :

aleenarose3
aleenarose3 aleenarose3
  • 03-06-2019
The answer is 45, if you solve
Answer Link
DeanR
DeanR DeanR
  • 03-06-2019

The exterior angles of any polygon add to 360 degrees.

If we call the interior angles A,B,C,D,E that means

(180-A) + (180-B) + (180-C) + (180-D) + (180-E) = 360

5(180)-360 = A+B+C+D+E

A+B+C+D+E = 540 degrees

So we know the indicated interior angles add to 540.

90 + 148 + 3x + x+10 + 112 = 540

4x + 360 = 540

4x = 180

x = 45

Answer: Choice C: 45

Answer Link

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