Which of the following is not necessary for a pair of angles to be vertical angles?
a. they are nonadjacent
b. they are congruent
c. they have the same vertex
d. they are complementary

The sketch shows two parallel lines cut by a transversal. angle 2 2 is 36° 36 ° . what is the measure of angle 8 8 ?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)