find the altitude of a given triangle
altitude(hA, A, ABC, H)
the A-altitude of ABC
vertex of ABC
An altitude from the vertex A of a triangle ABC is a line segment (or its extension) from vertex A perpendicular to the side BC.
If the optional argument H is given, the object returned (hA) is a line segment AH where H is the projection of A onto the side BC. If it is not given, the object returned is a line passing through A and is perpendicular to the side BC.
For a detailed description of the altitude hA, use the routine detail (i.e., detail(hA);)
The command with(geom3d,altitude) allows the use of the abbreviated form of this command.
Define triangle ABC with vertices A, B and C.
Find the altitude of ABC at A
name of the objecthA1form of the objectline3dequation of the line_x=9⁢_t5,_y=3⁢_t5,_z=0
name of the objecthA2form of the objectsegment3dthe 2 ends of the segment0,0,0,95,35,0
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