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The value of P is 50 degree , Option D is the correct answer.
According to the exterior angle property the measure of exterior angle is equal to the sum of opposite interior angles.
In the given figure it can be seen that one of the exterior angle is 90 degree ,
which is making a supplementary angle with the interior angle corresponding to it , angle B in the figure
Therefore the interior angle B is 90 degree ,
The value of angle C = p degree
To determine the value of angle C
The exterior angle next to angle A = 140 degree
By the exterior angle property
140 = 90 +p
p = 50 degree
The value of P is 50 degree , Option D is the correct answer.
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To know more about Exterior Angle Property
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