Geometry Circle y Area Ill AB c A Simm o AB B Circumference is IT ID 21T r are on circumference AB 2 fo is a sector r air II arqffB I 3600 2 AOB is Central angle both intercept same a XI B 2 A CB AT is inscribed angle intercepting ABT L ACB L ABC A arc 900 L ADC Both inscribed angles intersepling same are AT A g AB j is tangent to Circle B at C Jc 1 AB tangent is 1 to the radius at point of tangency A B 1 08 AE CB if AE CB Then OT LAB measure of Arc ABT andviseversen ÉB AT III of measure of LA OB f AB I B D of Then AB Then m E EDT AB measure of Are m CR measure of centralangle opposite to This arc