Question

Fine the measure of the missing angle

Answer 1

b= 51° c= 129°

Explanation:

We know that angle b = 51° as it is a verticle angle to 51°. To find angle c, we must know that on a straight angle, there is a total of 180°.

180° = angle 1 + angle 2.

Since we know one of the angles, we can plug it into the equation,
180° = 51° + c

-51° -51°

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180° - 51° = c

129° = c