Abc and dog are vertical abc= (5a-12) dbf= (3a+18) write an equation that models the angle relationship solve it and find each
how can a be both an angle and a side?
Where did f come from?
Retype, using A,B,C for points, and a,b,c for sides.
And don't forget f.
But you know that vertical angles are congruent, right?