Answer:
Explanation:
In a a parallelogram, opposite sides are equal.
6x = 24
Divide both sides by 6
x = 4
In a parallelogram, opposite angles are equal.
∠B = 76°
In a parallelogram, adjacent angles are supplementary.
∠A + ∠D = 180°
∠A + 76 = 180
∠A= 180 - 76
∠A = 104°
∠BAC + ∠CAD = ∠A
∠BAC + 21 = 104
∠BAC = 104 - 21
∠BAC = 83°