Acircular pool is enclosed by a square fence so that the pool touches the fence in four places, as shown in the figure below. if the circumference of the pool is 100π feet, how much fencing was used to enclose the area?

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.