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  • 17-12-2018
  • Mathematics
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Please help!!!! Pleeaaseee

Please help Pleeaaseee class=

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iiMGii
iiMGii iiMGii
  • 17-12-2018
ANSWER:

119°

The measure of angle B in degrees is 119°.

STEP-BY-STEP EXPLANATION:

To find angle B, we will first find angle A.

The sum of the two interior angles which don't share a vertex with the respective exterior angle are equivalent to the respective exterior angle.

THEREFORE:

Let angle A = A

A + 51 = 112

A = 112 - 51

A = 61°

A and B together form a straight angle. A straight angle is equivalent to 180°.

THEREFORE:

Let angle B = B

A + B = 180°

61 + B = 180

B = 180 - 61

B = 119°
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