A common example is the Kanizsa triangle which is induced by three black circles placed in the apexes of a triangle. Each circle has a 60 degree wedge removed so that these wedges become the angles of the illusory triangle
A common example is the Kanizsa triangle which is induced by three black circles placed in the apexes of a triangle. Each circle has a 60 degree wedge removed so that these wedges become the angles of the illusory triangle