Question

Find the measure of the missing angles.
99
e
f
d

Answer 1

E=99

F=72

D=90

Explanation:

99 and e are vertical angles, so they are congruent. So now, you have 99+99+f+d=360.

`99+99+f+d=360.\\198+f+d=360`

D is a right angle, so add 90 degrees to your answer and solve from there.

`198+90+f=360\\288+f=360\\f=72`

99, 99, 90, and 72 should be the answers.