solid geogebra
facet normal -0.34 0.10 -0.93
    outer loop
        vertex 29.55 26.98 24.73
        vertex -0.00 0.00 32.37
        vertex -8.59 39.08 40.01
    endloop
endfacet
facet normal 0.67 -0.73 0.00
    outer loop
        vertex 18.26 16.67 64.75
        vertex -0.00 0.00 32.37
        vertex 29.55 26.98 24.73
    endloop
endfacet
facet normal -0.76 -0.28 0.57
    outer loop
        vertex 18.26 16.67 64.75
        vertex -8.59 39.08 40.01
        vertex -0.00 0.00 32.37
    endloop
endfacet
facet normal 0.40 0.85 0.33
    outer loop
        vertex 29.55 26.98 24.73
        vertex -8.59 39.08 40.01
        vertex 18.26 16.67 64.75
    endloop
endfacet
endsolid geogebra