G.563 cone part cylinder — Code

XII.10

Any cone is a third part of the cylinder which has the same base with it and equal height.
A E H B D F G C
"""Programmatic construction for Book XII, Proposition 10 (XII.10)."""

        from __future__ import annotations

        from geometor.model import Model


        def construct_g1() -> Model:
            """Construct the figure 0404.g1 using geometor.model."""
            model = Model("XII.10")

            # Center O and points on circumference of circle ABCD
            O = model.set_point(131.0, -134.0)
            A = model.set_point(131.0, -29.0, classes=["given"], ID="A")
            B = model.set_point(26.0, -134.0, classes=["given"], ID="B")
            C = model.set_point(131.0, -239.0, classes=["given"], ID="C")
            D = model.set_point(236.0, -134.0, classes=["given"], ID="D")

            E = model.set_point(56.75, -59.75, ID="E")
            F = model.set_point(56.75, -208.25, ID="F")
            G = model.set_point(205.25, -208.25, ID="G")
            H = model.set_point(205.25, -59.75, ID="H")

            # Base circle ABCD
            model.construct_circle(O, A)

            # Square sides
            model.set_segment(A, B)
            model.set_segment(B, C)
            model.set_segment(C, D)
            model.set_segment(D, A)

            # Octagon sides
            model.set_segment(A, E)
            model.set_segment(E, B)
            model.set_segment(B, F)
            model.set_segment(F, C)
            model.set_segment(C, G)
            model.set_segment(G, D)
            model.set_segment(D, H)
            model.set_segment(H, A)

            # Polygons
            model.set_polygon([A, B, C, D])
            model.set_polygon([A, E, B, F, C, G, D, H])
            model.set_polygon([A, E, B])
            model.set_polygon([B, F, C])
            model.set_polygon([C, G, D])
            model.set_polygon([D, H, A])

            return model


        if __name__ == "__main__":
            construct_g1()