Question

from given figure find the value of x and y and show that AB//CD
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Answer 1

Answer:

x and y =50

Step-by-step explanation:

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Answer 2

Answer:

Angle X + angle 50 = 180° ( forming linear pair)

Angle X = 180 - 50

X = 130°

angle y = 130° ( opposote angles are equal)

angle X= angle y ( alternative angles)

AB is pallarel to CD ( forms a pari of alternative angles)

Using a theorem , if a pair of alternative angles are equal then the two lines are parallel

hence, proved.