Math of BTC (Just For Fun)

For tetrahedron XABD

Know:
The height of lowering from A to the XBD plane is AA" = 14500
Length CA = 19000
Distance XB = 7100
XD = 3600
AD = 15500

From B draw a line BC such that it forms a tetrahedron XACD with B being the center of the tetrahedron such that the area of tetrahedron ABCX is equal to the area of tetrahedron ABCD

With pre-measured angles on the chart.

Q: How much is the CD segment?

• A: CD= 7300
  B: C1D = 9600
  C: C2D = 13000
  

Comment:

C1D actived