Which statement is true of triangles P and Q? Triangle P has side lengths of 6, 8, 10 and angle measures of 53.1 degrees, 90 degrees, 36.9 degrees. Triangle Q has side lengths of 18, 24, 30 and angle measures of 53.1 degrees, 90 degrees, 36.9 degrees. They are similar because their corresponding angles have proportional measures and their corresponding sides are congruent. They are not similar because their corresponding angles are congruent. They are similar because their corresponding angles are congruent and their corresponding side lengths are proportional. They are not similar because their corresponding side lengths are not proportional.