Hi Hamid here is a way how to do it:
on top view make triangle with polygone tool ,
one small one add pts to it
make hexagone ,
snap the cpts to hexagone end points
make Z blue axe
rotate (make copy) triangle and pink shape,snap to Z blue axe
make sphere in the center RED PT (red point is the int off the blue axes )
Project the pink shape to sphere ( closeste pts )
circular array 3 on Z axes
make red lines and project to closeste
draw circle on shpere and project closest ,circular array.
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new shape easy to do with 3 sided pyramid ( Tetrahedron ) and sphere
1 intersect ,draw yellow polyline project closeset
2 chamfer the pyramid project closeset edges on sphere . intersect the sphere and the pyramid
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