63 as a product of prime factors

How are sas and sss used to show that two triangles are congruent?

How does reflecting or rotating a figure change the interior angles of the figure?

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.