If there are two supplementary angles angle D and angle e where angle D equals 4x + 8 and angle e = x + 17 and angle f is a vertical angle with angle D what is the measure of angle f
Vertical angles are congruent, so the measure of angle f is equal to the measure of angle D.
Given that angle D = 4x + 8, we know that angle f = 4x + 8.