Question

. If AB parallel to CD Find y for the figure given below *​

Answer 1

Answer:

y=20 degrees

Step-by-step explanation:

1. if AB // CD then take BD as transversal line
2. so that angle ABD=y+2y+y=4y
3. as per the theorem.... the sum of opposite interior angles is equal to 180 degrees
4. angle ABD+angleCDB=180 degrees
5. so 4y+5y=180degrees
6. 9y=180degrees
7. y=180/9
8. y=20 degrees

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