MathDB

1

Part of 1998 Finnish National High School Mathematics Competition

Problems(1)

Points and areas

Source: Finnish Mathematics Competition 1998, Final Round, Problem 1

11/14/2011
Show that points A,B,CA, B, C and DD can be placed on the plane in such a way that the quadrilateral ABCDABCD has an area which is twice the area of the quadrilateral ADBC.ADBC.
geometrygeometry unsolved