△BCE∼△JKL. If m∠B=89°, m∠C=13°, and m∠E=78° what is m∠J?
Since triangle BCE is similar to triangle JKL, the corresponding angles are equal in measure.
We are given that m∠B = 89°. Corresponding to this angle in triangle JKL is ∠J.
Therefore, m∠J = 89°.