What is true about the angles in the diagram shown below?

Triangle A B C is shown. Segment D E goes from side A B to side A C forming triangle A D E. Angle A E D and angle A C B have right angle labels. Angle A is labeled x degrees. Angle B is labeled three x degrees.

Enter the correct answers in the boxes.

The value of x is
.

The measure of ∠ADE is
°.