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angle3d(r:Recta,p:Plane )

angle3d(r,p)=angle3d(p,r)





angle3d(p:Plane,s:Segment)

angle3d(p,s)=angle3d(p,recta(s))





angle3d(p:Plane,r:Recta)





angle3d(p1:Plane,p2:Plane )





angle3d(s:Segment,p:Plane )

angle3d(s,p)=angle3d(p,s)



















angle3d(T:Triangle,i:ZZ)




angle()

si estat_geometria=2 aleshores angle=angle2d altrament angle=angle3d fi





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