#circumcircle

#Geometry Problem 1399: #Triangle , #Circumcircle , #Perpendicular s, #Angles , #Congruence , #Cyclic #Quadrilateral #problemsolving #math #proof #highschool #teaching #tutoring http://www.gogeometry.com/school-college/4/p1399-triangle-circumcircle-perpendicular-angle-congruence.htm https://www.instagram.com/p/BqDh5QnBV4l/?utm_source=ig_tumblr_share&igshid=110outtqim4pa

#Geometry #Problem 1384: #Triangle , #Orthocenter , Circle, #Circumcircle , #Angle #Bisector , 90 Degree #math #proof #highschool #college #illustration #sketch #graphic #problemsolving http://www.gogeometry.com/school-college/4/p1384-triangle-circumcircle-orthocenter-bisector-90-degree.htm https://www.instagram.com/p/BnW4vd2HgAZ/?utm_source=ig_tumblr_share&igshid=18j6522z4oigh

#Geometry Problem 1337 #Parallelogram #Diagonal Circle, #Circumcircle #Tangent Line, Triangle, #Congruence Details: http://www.gogeometry.com/school-college/4/p1337-parallelogram-circumcircle-tangent-congruence-tutoring.htm

#Geometry #Problem 366. #Scalene #triangle, #Circumcircle Angles, 60 Degrees, #Equilateral triangle Details: http://www.gogeometry.com/problem/p366_equilateral_triangle_60_degree.htm