D PROVING THEY ARE Given Angle ACB is a circumscribed angle

Last updated: 6/1/2023

D PROVING THEY ARE Given Angle ACB is a circumscribed angle that intercepts the same arc as central angle AOB Prove m2ACB m2AOB 180 0 SUPPLEMENTARY B L m20AC m 0BC Tangents are perpendicular to radii at the point of tangency O m20AB mZ0BC m2AOB m2ACB The sum of the interior measures of a quadrilateral is 360 Subtract the measures of the two right angles m2ACB m2AOB 360 90 90 m2ACB m2AOB O