These symbols are also known as archetypes, which are used by the Occult of this world in advertising and symbolism all over the world.
It is important to note, that what makes a thing ‘bad’ is how it is used, either honorably or dishonorably.
These symbols have been used by the Cabal dishonorably, but that does not make them evil.
See the posts Archetypal Symbols and Meanings used in Advertising | Mark Passio on Infowars Nightly News – January 20th 2015 and Sacred Geometry: Constructing The Universe – Goodness at the Heart of All things.
All is numbers, and sacred geometry is the laws of math in computing the divine secrets of the universe. The meaning of the word sacred is being connected with God (or the gods) or dedicated to a religious purpose and so deserving veneration. Geometry is a branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs,
Therefor, sacred geometry is the language of God concerning the laws of the universe. The images below represent some of these geometrical symbols.