Triangle

I want a triangle tattoo, either both of them or someone dear to me have one and I have the other. It is simple yet meaningful. Here are several meanings;

Greeks believe the triangle to be symbolic of  a doorway. The thought was that the combination of polarities would provide a new opening or doorway to a higher wisdom.

A triangle has three sides, each side could represent something different;

•  past, present & future
• thought, feeling & emotion
• creation, preservation and destruction

I feel like if I were to get the triangle(s) it would be tattooed on my bicep. I don't know why there but that is where I picture it in my head.