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I need help with this

I need help with this-example-1
User Bsabiston
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1 Answer

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Answer:

Read following paragraph:

Explanation:

In the Diagram the line PQ and XY are Parallel

Angle XBA = a degree (Alternate angles in parallel line)

Angle YBC = c degree (Alternate angles in parallel line)

hence a + b+ c = 180 degree (angles on a straight line)

User Laurine
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