The shapes of geometric sections are round, oval, prism, pyramid, cuboid, cube, trapezoid, triangle, quadrilateral and so on.
Cross-section can be divided into: cross-section, flat cross-section, oblique cross-section and straight cross-section.
The cross section is a horizontal cutting geometry, which is cut from a specific direction. For example, the cross section of a cylinder or cone is generally circular; The plane section is parallel to the bottom surface of the geometry; The straight section is perpendicular to the high line or symmetry axis of the geometric figure; The inclined section forms an angle with the high line or symmetry axis of the geometric figure.
Extended data
Cross-section of common geometry
The cross section of the cube can be: triangle, isosceles triangle, equilateral triangle; Square, rectangle, parallelogram, diamond, trapezoid; Pentagon, hexagon.
The cross section of a cylinder can be circular, elliptical, rectangular and irregular.
The cross section of a cone can be round, oval, isosceles triangle and irregular figure.
The cross-sectional shapes obtained by cutting geometry with plane are mostly circular and polygonal, or they may be irregular, which are generally related to the following two points:
(1) geometry;
(2) the direction and angle of cutting.
Generally speaking, a section intersects with several surfaces of geometry to get several intersecting lines, and a section intersects with a plane to get several polygons; Curves are obtained when the cross section intersects the surface, and the cross section is circular or irregular.
Baidu Encyclopedia-Geometry Section