
Figure : 1
The value of an exterior angle is equal to the sum of values of two opposite interior angles.
That is :
Therefore, value of x is 20°
And the measure of missing angle is :
Figure : 2
The Value of an Exterior angle is equal to the sum of values of two opposite interior angles .
Hence,
And therefore measure of missing angle is 36°, since v was the missing angle here.
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