Show that OD is perpendicular to OA. angle AOB + angle BOC = angle COD 28 + 17 = 45 angle AOB + angle COD = 90 Therefore, OD is perpendicular to OA.
Follow Math Help Forum on Facebook and Google+
Originally Posted by stellina_91 Show that OD is perpendicular to OA. angle AOB + angle BOC = angle COD 28 + 17 = 45 angle AOB + angle COD = 90 Therefore, OD is perpendicular to OA. You are right.
View Tag Cloud