Triangle is one of the most powerful and versatile symbols, the first of the figures that defines the plane. In sacred geometry, the shape of an equilateral triangle is a symbolic image of God. The equilateral triangle symbolizes completion.
The triangle pointing upwards is a male sign, symbolizing fire, life, heart, mountain and ascent, prosperity, harmony, flame, spiritual world.
The inverted triangle is perhaps a more ancient sign, it is lunar and has the symbolism of the feminine, water, cold, nature.
Triangle is one of the most versatile and ubiquitous symbols in art and have been used by many cultures throughout history. The triangle has been utilized to convey a variety of meanings and has been incorporated into numerous forms of ancient art.
One of the most common interpretations of the triangle is as a symbol of strength and stability (because of its solid base and pointed top). This interpretation is evident in the ancient Egyptian pyramids, which were built in the form of triangles that conveys a sense of permanence and order.