Traditional Culture Encyclopedia - Traditional stories - Zhuanzhui creativity manual
Zhuanzhui creativity manual
Step 1: Cut out five discs, one big, four small, with blue cardboard, and cut all the discs into big sectors.
Step 3: Roll the five disks into a cone.
Step 4: Roll out five cylinders with white cardboard, one big and four small.
Step 5: Paste the big cylinder and the big cone together, and then assemble the small cylinder and the cone respectively.
Step 6: paste the assembled small cone and cylinder on the large cone cylinder respectively, and the general shape of the rocket is completed.
Introduction of cylindrical cone;
1. A cylinder is a geometric body surrounded by two equal and parallel circles (bottom surfaces) and a curved surface (side surfaces) connecting the two bottom surfaces.
When the axis of a cylinder is perpendicular to the bottom of the cylinder, it is called a right cylinder. When the axis of a cylinder is not perpendicular to the bottom of the cylinder, it is called an oblique cylinder.
2. A cone is a geometric figure, which has two definitions. Analytic geometry definition: A spatial geometry consisting of a conical surface and a plane intersecting it (the intersection line is a circle) is called a cone.
Definition of solid geometry: The geometry formed by taking the straight line where the right side of a right triangle is located as the rotation axis and the other two sides rotating 360 degrees is called a cone.
The axis of rotation is called the axis of a cone. The surface formed by rotating a surface perpendicular to the axis is called the bottom surface of the cone. A surface that is rotated by an edge that is not perpendicular to the axis is called the side of a cone. No matter where you rotate, the side that is not perpendicular to the axis is called the generatrix of the cone.
- Previous article:What is the flower language of roses?
- Next article:What are the production management modes?
- Related articles
- Tradition of Lantern Festival
- I want to send a parcel of about 30 Jin. I want to know the price list of the post office and the price list of SF Express.
- What are the characteristics of wolves?
- Brief introduction to the problems of agriculture, countryside and farmers and their solutions
- Four basic models of e-government
- A4 paper traditional festival handwritten newspaper traditional festival handwritten newspaper
- cad furniture drawing tutorial
- Why can't the six-year version of the Monkey King be surpassed so far?
- Dogs are man's most loyal friends. Why do many people choose to eat dog meat?
- What are the characteristics of Dong's clothes?