Hi Alea...
A 3D pyramid can be represented as a 2D pattern
of four equilateral triangles as in the Templar
cross...Christianity is no further away from
Egypt than Muslims and Jews.
"Templar Cross.—This Cross is formed of four equilateral triangles joined at the apices, and is called the Cross patée. It is the insignia of the officers of a Grand Commandery.
It is insisted upon by learned antiquarians that this is the Red Cross of the Order which the ancient Templars wore. That Cross is described as of "equal limbs, somewhat wider and somewhat concave at the ends, heraldically called patée." The "Ancient Red," here given, illustrates that Cross, and the author of this Monitor is inclined to accept it in preference to the form adopted by the Grand Encampment of the United States. This Cross was given the Templars by Pope Eugenius, and some think the Cross he gave them had its lower limb longer than the others, as in the Passion Cross."