Question

ABCD is a parallelogram find the value of xyz
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Answer 1

Answer:

since ad||BC

z = 30 deg. ( alternate interior angle)

since AC is a straight line 100+X = 180

or X = 80deg

now in triangle BCO , where O is the point of intersection of AC and BD

X+y+30 = 180

Y = 70 deg

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

angle x = 180 - 100

x = 80°

now , x + y + 30 = 180

80 + y + 30 = 180

y = 180 - 110

y = 70 °

AB is parallel to DC

BD is transversal

so angle Z and angle b is same

so angle Z = 30°