Answer:
x₁ = x₂ (corresponding angles are equal)
y₁ = y₂ (right angles)
z₁ = z₂
Since the angles in the first triangle are equal to the angles in the second triangle, the two triangles are similar.
Because they are similar, then the ratios of their corresponding sides are equal:
h = 9×16/11 = 144/11 = 13 1/11 = 13.09