Triangles are the perfect three sided figures and represent perfection in spiritual references in terms of manifesting. To manifest you must have a beginning, an action, and an outcome. The outcome is what is produced from the relationship between the beginning element and the action. This is the same for drawing. You must begin a line to establish a shape...and in counting you must begin with the number one to continue growth and expression of numerals which add, subtract, divide, and fraction.