Mathematics
The following figure shows a parallelogram ABCD.
Use the given informations to find the values of x, y and z.

Rectilinear Figures
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Answer
Opposite sides of a parallelogram are equal.
⇒ AB = CD
⇒ (3x - 1) = (2x + 2)
⇒ 3x - 2x = 2 + 1
⇒ x = 3 cm
Sum of two consecutive angles of a parallelogram is 180°.
⇒ ∠A + ∠B = 180°
⇒ (50° + z) + 102° = 180°
⇒ 50° + z + 102° = 180°
⇒ 152° + z = 180°
⇒ z = 180° - 152°
⇒ z = 28°
AB ∥ CD and AC is transversal line,
⇒ ∠BAC = ∠ACD
⇒ ∠BAC = ∠ACD = 28°
Now, ∠ACD and ∠y forms a linear pair.
⇒ ∠ACD + ∠y = 180°
⇒ 28° + ∠y = 180°
⇒ ∠y = 180° - 28°
⇒ ∠y = 152°
Hence, the value of x = 3 cm, y = 152° and z = 28°.
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