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Cone net

A cone refers to a group of solids formed by rotating a flat geometric shape around an axis. In the case of a cone, rotation occurs relative to one of a right triangle leg.
 

How can you make a cone of paper?

cone drawing
Here you can build a truncated cone model with the following characteristics: height 185 mm, base diameter 90 mm.Download cone net
net cone
 
 
What is the cross-section of the cone?
cone cross section
Depending on the angle of inclination of the section plane to the base of the cone, four sections can be formed: a circle, an ellipse, a parabola, a hyperbola.
cone cross section
 
 
An example of architecture: the base of the Ostankino television tower in Moscow has the shape of a truncated cone:
 
truncated cone building
 
cone cross section ellipse
You can build a truncated cone model with the following characteristics: height 185 mm, base diameter 90 mm, 55° section plane inclination angle, ellipse-shaped section. Download net truncated cone with an ellipse section.
net cone cross section ellipse
 
 
 
The elliptical cone assembly scheme:
truncated cone
1. Connect the parts so that you get a tube.
truncated cone
2. To avoid difficulties and shifting when gluing the bases, we recommend that you first glue the auxiliary items. This will allow you to hold them smoothly when gluing and will create the correct shape of the geometric structure.
 
truncated cone
3. Perform a similar procedure for the lower base.
truncated cone
4. Glue the base.
 
 
cross section cone paraboloid
We suggest you build a truncated cone model with the following characteristics: height 110 mm, base diameter 100 mm, 65° section plane inclination angle, slice thickness relative to the base 10 mm, parabola section shape.
Download a net of a truncated cone with a cross section of a parabola (or parabolic cone).
net cross section cone paraboloid

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