Question

Find the value of the unknown angles from the adjacent figure​

Answer 1

angle besides x are

180-65 = 115

and,

180-75 =105

.

.

Now,pentagon have sum of angle : 540

so, 115+105+20+2x = 540

240 + 2x = 540

2x= 300

x = 150° .Answer

Answer 2

Answer:

x = 150 degree

explanation -

180 - 75 = 105

similarly

180 - 65 = 115

now ,

540 = 105 + 115 + x + x + 20

540 = 240 +2x

540 - 240 = 2x

300/2 = x

therefore ,

x = 150 degree

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