# Thread: Properties of Parallel Lines (Finding Angle Measure)

1. ## Properties of Parallel Lines (Finding Angle Measure)

If AC is parallel to BD, FAC is 80 degrees, CAO is 60 degrees, and BO bisects DBE, then what is the measure of BAO?

This question is taken from Geometry (McDougal Littell), Chapter Three. (Not drawn to scale)

2. ## Re: Properties of Parallel Lines (Finding Angle Measure)

Originally Posted by candaceformosa
If AC is parallel to BD, FAC is 80 degrees, CAO is 60 degrees, and BO bisects DBE, then what is the measure of BAO?

This question is taken from Geometry (McDougal Littell), Chapter Three. (Not drawn to scale)
This is a trivial question because $\angle BAO$ is supplementary to $\angle OAF$.