Triangles are special because they are exceptionally strong.  They are one of the first studied shapes in geometry and are the most rigid.  It holds its shape, and has a base which is also a very strong support. Triangles are also connected to the number three, which in many cultures represents balance and true wisdom. It can symbolize time, (past, present and future) and represent three traits or values you love (Holy Trinity). The Egyptians also built pyramids as tombs for their Pharaohs.
“Build your own pyramids, write your own hieroglyphs.”  Kendrick Lamar