Since m<B is equal to m<E, hence the angles are similar triangles
To determine if both triangles are similar, all the interior angles of the triangles must be equal to each other that is;
Get the measure of angle B
The measure of the interior angle of the triangle is 180 degrees
m<D + m<E + m<F = 90
90 + m<E + 55 = 180
m<E = 180 - 145
m<E = 35 degrees
Since m<B is equal to m<E, hence the angles are similar triangles
Learn more on similar triangles here: https://brainly.com/question/2644832
