The deck that kenneth is building is in the shape of a parallelogram abcd the measure of angle c is one third the measure of angle b find the measure of each angle of the deck

∠A = ∠C = 45° and ∠B = ∠D = 135°

Step-by-step explanation:

In the picture attached ABCD is a parallelogram in which the measure of angle C is one third of the measure of angle B.

Since in a parallelogram opposite angle are equal then we can say easily that ∠A = ∠C and ∠B = ∠D

We know in a parallelogram sum of all internal angles = 360°

Therefore ∠A + ∠B +∠C + ∠D = 360°

Since ∠A = ∠C and ∠D = ∠B

∠C + ∠B + ∠C + ∠B = 360°

2(∠B + ∠C) =360

∠B + ∠C = 180

Now ∠C = 1/3×∠B

∠B + 1/3×∠B = 180

4/3 ×(∠B) =180

∠B =

∠C = 1/3×∠B = 135/3 = 45°

Therefore ∠B = ∠D = 135° and ∠A = ∠C = 45°

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step-by-step explanation:

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