Answer:
d = 90° , e = 119° , f = 61°
Explanation:
the right angle and d are a linear pair and sum to 180° , that is
d + 90° = 180° ( subtract 90° from both sides )
d = 90°
e and 119° are vertically opposite angles and are congruent , so
e = 119°
f and 119° are a linear pair and sum to 180° , then
f + 119° = 180° ( subtract 119° from both sides )
f = 61°