Angle sum property Share with your friends Share 1 Devikrishna Devuzz answered this Sum of the three sides of the triangle is equal to 180 degree 1 View Full Answer ........... answered this Angle sum property is defined as the sum of all the angles of a figure 2 Tanmay . answered this Sum of all the angles of any closed figure is defined as Angle sum property 2 Alok Mishra answered this Sum of all all angles of a triangle is 180 degree 1