Consider five points in a plane which are such that no two straight lines joining them are either parallel, perpendicular or coincident. From each point perpendiculars are drawn to all lines joining the other four points. Determine the maximum number of intersections these perpendiculars can have.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
No explanations have been posted yet. Check back later!