The rectangular prism is to be sliced perpendicular to the shaded face and is to pass through point B, parallel to the front face. What will the dimensions of the rectangular cross section be?

A rectangular prism. The rectangular base has a length of 10 centimeters and width of 8 centimeters. The rectangular side with point B has a length of 10 centimeters and width of 18 centimeters.

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 step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.