Ladder on the Stairs

Geometry Level 1

A ladder is placed on a stairway (as shown). What is the length of the shorter leg?

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Details and Assumptions:

  • Each step has the same horizontal run of \(15 \text{ cm}\) and vertical run of \(10 \text{ cm}.\)
  • Each leg of the ladder rests on the horizontal midpoint of a step.
  • The angles that the legs make with the steps are congruent.
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