Triangular pyramid ????

[LAOLONG]

Where in the world there is
A triangular pyramid structure .
A triangular pyramid is the most primary geometrical 3d .

 

[LAOLONG]

54 minutes ago, Apeiron&Peiron said:

It is not a triangular pyramid

It has a □ base.

[LAOLONG]

Nowhere in the world there is a

Triangular pyramid ?

[Nungali]

 

........

 

 

 

 

[Nungali]

2 hours ago, SHINTO said:

Nowhere in the world there is a

Triangular pyramid ?

 

Mars;

 

 

[LAOLONG]

On 3.12.2017 at 2:01 AM, Nungali said:

 

Mars;

 

 

http://www.dailymail.co.uk/sciencetech/article-4671892/Nasa-satellite-spots-two-mystery-objects-Mars.html 

The dome and the triangular pyramid are the primary 3d
Shapes . It is the basic curved structure  ( the dome )
And the basic straight line 
Structure ( triangular pyramid )
 

[Nungali]

the basic curved structure is a sphere not half a sphere.

 

Your  are  right  about  tetrahedron  though

 

 

 

 

 

 

Edited December 4, 2017 by Nungali