[HP-Prime - Geometry App] What is wrong with this ? - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: [HP-Prime - Geometry App] What is wrong with this ? (/thread-254056.html) [HP-Prime - Geometry App] What is wrong with this ? - Jean-Michel - 10-27-2013 Hello I'm trying to draw a circle circumscribed to a triangle (manually, not by using the pre-programmed function) Here is the content of the SYMB view (on the real calc): GA:=point(77.4,32.1) GB:=point(-44.2,-204.8) GC:=point(338.2,-145.4) GE:=segment(GA,GB) GG:=segment(GB,GC) GH:=segment(GC,GA) GD:=triangle(GA,GB,GC) GI:=perpen_bissector(GE) GJ:=perpen_bissector(GG) GK:=perpen_bissector(GH) GL:=inter(GI,GJ) GN:=circle(GL,GA-GL) --> that line does not draw anything Not only it does not work in PLOT view, but also in SYMB view. I can draw any circle involving whatever vertices of the triangle, but not any involving the INTERsection point L, whatever it would be the center or a point of the curve. Help much appreciated Kind regards. Re: [HP-Prime - Geometry App] What is wrong with this ? - Edwin - 10-27-2013 the command inter() does not return a point, it returns a vector of points, try better single_inter. ```... GL:=single_inter(GI,GJ) ... ``` Re: [HP-Prime - Geometry App] What is wrong with this ? - Jean-Michel - 10-27-2013 Many thanks Edwin. Too bad this instruction was deeply hidden in the User's Guide. My fault not having read it thoroughly enough. Kind regards.