Symbols with triangles
Pointing up or down.
Hindu symbols
- Sri YantraA diagram of nine interlocking triangles around a central dot, surrounded by circles and petals. In the Sri Vidya tradition it is the form of the goddess Lalita Tripurasundari, and is worshipped as such.
- DamaruThe hand drum of Shiva as Nataraja, lord of the dance. Its beat is the first sound of creation and the rhythm of time.
Elder Futhark runes
Masonic symbols
- All-seeing eyeAn open eye, often in a triangle with rays around it. In Freemasonry it stands for the watchful eye of God.
- LevelA builder's level, which proves a surface horizontal. In Freemasonry it stands for equality: Masons 'meet on the level'.
- 47th problem of EuclidA right triangle with a square on each side, the theorem that is the 47th proposition in the first book of Euclid's Elements. In Freemasonry it appears on the Past Master's jewel.
- ApronThe white apron every Freemason wears in the lodge, known as the badge of a Mason.