Thanks for the A2A.. A quadrilateral is said to be cyclic, if there is a circle passing through all the four vertices of the quadrilateral. read more
The properties are. 1.A cyclic quadrilateral is a 4-sided figure whose vertices lie on the circumference of a circle. 2,The sum of the opposite angles equals 180 degrees. read more
In Euclidean geometry, a cyclic quadrilateral or inscribed quadrilateral is a quadrilateral whose vertices all lie on a single circle.This circle is called the circumcircle or circumscribed circle, and the vertices are said to be concyclic. read more
Cyclic quadrilateral. If all four points of a quadrilateral are on circle then it is called cyclic Quadrilateral. read more