You have to be specific on what you're trying to ask. What subject is this in?
Identify the angle variable to use.
Write an equation.
Solve the equation for the variable.
Find the unknown angle measure.
Answer:

Step-by-step explanation:
Coordinate of B = 1
Coordinate of D = 6
Coordinate of A = -1
BD = |1 - 6| = 5 units
AD = |-1 - 6| = |-7| = 7 units

Plug in the values
