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Truncated triangular pyramid

Truncated triangular pyramid
At the base of the pyramid is a regular triangle (all sides are equal, the angles between the sides of the base are 60 degrees).
 
The height of the pyramid is exactly at the center of the triangular base.
 
Truncated triangular pyramid
net Truncated triangular pyramid
 
Geometric dimensions of the finished pyramid (mm):
Height = 35
this pyramid can be inscribed in a truncated cone with base radii r = 35 mm and R = 55 mm
 
Truncated triangular pyramid
net Truncated triangular pyramid
 
Geometric dimensions of the finished pyramid (mm):
Height = 50
this pyramid can be inscribed in a truncated cone with base radii r = 25 mm and R = 50 mm
 
Truncated triangular pyramid
net Truncated triangular pyramid
 
Geometric dimensions of the finished pyramid (mm):
Height = 80
this pyramid can be inscribed in a truncated cone with base radii r = 20 mm and R = 50 mm
 

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