0.00 $
 0 item(s)

Regular ninth-angle pyramid

Regular ninth-angle pyramid

At the base of the pyramid is the right ninth-corner (all sides are equal, the angles between the sides are 140 degrees).

 
The height of the pyramid is exactly in the center of the nine-cornered base.
Regular ninth-angle pyramid
net Regular ninth-angle pyramid
 

Geometric dimensions of the finished pyramid (mm):
Length = 107
Width = 110
Height = 85

 

Popular

Mathematical properties of the Platonic solids

One can specify the following mathematical characteristics in each of the five Platonic solids: 1....

How to quickly make a TORUS from a sheet of paper

Want to make a fairly complex geometric solid - torus in 10...

Don't you like math? Beware of Halloween!

If you don't like math, then on Halloween, evil forces will come for you! Create two guards who...

How to master stereometry?

In geometry, the section which deals with three-dimensional figures is called stereometry. The...

Prince Rupert's Cube

IIn issue 25 of the Magic Edges, we noticed that we get a cross-sectional cut at the cut point by...

Multifaceted hearth

For a primeval man, fire once became a new form of social life. The night ceased to be an...