Find $m \angle E$. A. $60^{\circ}$ B. $100^{\circ}$ C. $120^{\circ}$ D. not enough information

Step 1 ：Find $m \angle E$.

Step 2 ：We need more information about the angles or the shape to find the measure of angle E. Currently, we cannot determine the value of angle E without additional information.

Step 3 ：\(\boxed{\text{D. not enough information}}\)