], (GC World : Various Problems ,Quadrangle→Quadrangle)
Perpendicular bisectors of four sides
Let's draw the perpendicular bisectors of the four sides of quadrangle ABCD, and label the intersections of bisectors E, F, G, H.
What does quadrangle EFGH become?
In the condition of particular shape
The result is one point
The result is one point/Sets of corresponding points
Forum of Geometric Constructor