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[HP-Prime - Geometry App] What is wrong with this ?



#3

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.


#4

the command inter() does not return a point, it returns a vector of points, try better single_inter.

...
GL:=single_inter(GI,GJ)
...

#5

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.


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