Question

angle a and angle b are vertical angles. if m angle a = (7x + 28) and m angke b = (5x+22) then find the measure of angle a

Answer 1

vertical angles are equal

7x+28 = 5x+22

subtract 5x from each side

2x +28 =22

subtract28 from each side

2x =-6

x = -3

angle a

7x+28

7(-3) +28

-21+28

7

Angle A =7