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In the figure below, a surveyor put stakes at the lettered points. He used string to determine lengths of line segments and a transit to check that the angles at D and B were both right angles.

If CD = 3, CE = 5, DE = 4 and DB = 18, and:
AB/DB=BC/CD


AB =
units.

In the figure below a surveyor put stakes at the lettered points He used string to determine lengths of line segments and a transit to check that the angles at class=


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