Sacred geometry is a belief system and a set of geometric principles that ascribes spiritual or mystical significance to certain geometric shapes and proportions. It has been a part of various cultures and belief systems throughout history, including ancient Egyptian, Greek, and Islamic traditions, as well as in practices like feng shui and the construction of religious buildings like cathedrals and temples. Some of the key elements and concepts associated with sacred geometry include:

• Sacred shapes: certain geometric shapes are considered sacred, such as the circle, square, triangle, pentagon, and hexagon. These shapes are believed to represent fundamental aspects of the universe.
• Golden ratio: the golden ratio, often denoted by the Greek letter phi (Φ), is a mathematical ratio found in various natural phenomena and art. It is believed to have spiritual significance and is often used in sacred geometry.
• Fibonacci sequence: the Fibonacci sequence is a mathematical sequence in which each number is the sum of the two preceding ones. This sequence is associated with the growth patterns of plants and is considered sacred in some traditions.
• Flower of Life: the Flower of Life is a geometric pattern composed of evenly spaced, overlapping circles that form a flower-like shape. It is considered a symbol of creation and is found in various ancient cultures.
• Metatron's Cube: Metatron's Cube is a geometric figure made up of multiple interconnected lines and shapes. It is often associated with archangel Metatron and is believed to have protective and transformative properties.

Benefits and Uses: 

• Meditation and spiritual practices: sacred geometry is often used as a tool for meditation and spiritual contemplation. Practitioners believe that meditating on sacred geometric shapes can help align their consciousness with the universe and promote a sense of interconnectedness.
• Healing and energy work: some people use sacred geometry in energy healing practices like Reiki or crystal healing. Specific shapes are believed to have healing properties and can be used in energy grids or layouts. 
• Art and design: sacred geometry has been influential in various forms of art, architecture, and design. Artists and architects incorporate these principles into their work to create aesthetically pleasing and harmonious compositions. 
• Geometric symbols: the use of sacred geometric symbols in jewelry and personal items is believed to bring protection, balance, and positive energy to the wearer. 
• Geomancy: in some cultures, sacred geometry is used in geomancy, a practice that involves interpreting the energy and significance of geographic locations and the arrangement of physical structures. 

It's important to note that the beliefs and benefits associated with sacred geometry are highly subjective and vary among individuals and cultures. While some find value in these practices for spiritual or artistic reasons, others may view them as pseudoscience or superstition. As with any belief system, it's essential to approach sacred geometry with an open mind and respect for different perspectives.