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x=36 explanation: for finding the total angles in a shape you have to follow the formula (n-2)180 which n is the number of sides so for a pentagon you will get 3.180=540 and by dividing it into the amount of angles you will get each angle's amount so 540/5=108 -> each angle back to the quastion you see the angle C is 108 and we have a triangle and angles D and B are equal so by subtracting 108 from 180 (total angles in a triangle) we get 72 which is equal to both B and D angles so by dividing it to 2 you will get 36 which is the answer
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