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If we select two points A and B on either side of the obstacle and equal perpendiculars AC and BD are set out. Then AB is equal to?

If we select two points A and B on either side of the obstacle and equal perpendiculars AC and BD are set out. Then AB is equal to? Correct Answer CD

Since AC and BD are two perpendiculars set either side of the obstacle of equal length. Therefore CD is parallel and equal to AB. Therefore, AB = CD.

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