## Which formula would be used to find the measure of angle 1? One-half(a° b°). One-half(a° – c°). One-half(b° c°). One-half(a° – b°)

Which formula would be used to find the measure of angle 1? One-half(a° b°). One-half(a° – c°). One-half(b° c°). One-half(a° – b°).