• Solution trisecting (n-sections) and n-proper construction of the polygon using divider and straightedge.

    The ball shall be awarded in two equal parts, obtained half contains two areas, the circle (represents a planar geometry) and a semi-sphere (represents spherical geometry), the circle is the boundary between the circuit and semi-sphere
    View photo (below)
    CIRCLE
    within a given arbitrary angle BAC,
    straightedge (straightedge is flexible, it can draw on a sphere) along the BA to extend the circle to give the point D
    SPHERE
    straightedge connect points B and D, you get the curve BD
    straightedge and divider - a procedure divisions curve into two equal parts is the same as the process of division shall exceed the level in two equal parts, we get the point E
    straightedge - connect points C and E and get the curve CE

    Proportion longer exists in plane geometry, I found that the process can be applied to the sphere
    choose point G
    divider EC, from point G we get a point H
    divider EC, from point H we get a point I
    divider EC, from point E twe get a point J
    divider EC, from point J get the point K
    divider EC, from point K get the point L
    straightedge point L and point I and connect, we get curve LI
    EG divider, from the point L we get a point P
    EG divider, from the point P and get the point O
    straightedge join the dots E and P and proceed to the circle, we get the point Q
    straightedge merge points E and O and proceed to the circle, we get the point R
    CIRCLE
    straightedge connect point A and point Q, we get along AQ
    straightedge connect point A and point R, we get along AR

    these have carried out the production of a given trisection angle, is obtained from the rest of the (n-section, a regular n-polygon) ...

    Now proclaim everywhere that I decided 2- millennium math problems