There is no pyramid on the Nicaraguan flag. It is actually an equilateral triangle. As such, the triangle stands for Equality.
Freedom, hope, love, friendship and good wealth
Nicaraguan córdoba was created in 1912.
Nicaraguan peso was created in 1878.
Nicaraguan peso ended in 1912.
Nicaraguan Revolution happened in 1961.
Nicaraguan Democratic Movement was created in 1978.
Nicaraguan Workers' Centre was created in 1962.
Nicaraguan Socialist Party was created in 1944.
Nicaraguan Resistance Party was created in 1993.
American Nicaraguan School was created in 1944.
Nicaraguan Liberal Alliance was created in 2005.
If you mean a pyramid with a four sided base, it is a square pyramid. If you mean one with four faces, it is a tetrahedron.