1, and the two bottom faces are congruent polygons with parallel corresponding sides; The lateral surface and diagonal surface are parallelograms; The sides are parallel and equal; The section parallel to the bottom surface is a polygon that is congruent with the bottom surface.

2. Both sides and diagonal faces are triangles; The section parallel to the bottom surface is similar to the bottom surface, and its similarity ratio is equal to the square of the ratio of the distance from the vertex to the section to the height. 3. A cone rotates a Zhou Suocheng with the right-angled side of a right-angled triangle as the axis of rotation.

4. A sphere is a geometric body formed by taking the straight line where the diameter of the semicircle is located as the rotation axis and the semicircle surface rotates once.

5. The image of quadratic function is a parabola, and parabola is an axisymmetric figure. The symmetry axis is a straight line x=-b/2a.