△

See also: ∆, Δ, and ㅿ

△ U+25B3, △ WHITE UP-POINTING TRIANGLE ← ▲ [U+25B2] Geometric Shapes ▴ → [U+25B4]

Translingual

Symbol

△

1. (geometry) A triangle.

   △ABC

   A triangle with vertices named A, B, and C in order.

2. (astrology) The symbol for trine.
3. (entomology) A symbol to indicate that an illustration represent the underside of a specimen.
4. See Δ for the Greek capital letter delta.
5. See ∆ for the increment symbol.
6. (computing, dated) ISO 2047 symbol for Space

Japanese

Etymology

Literally 'three angles' (三角), referring to the shape of a triangle. Most likely coined in analogy with ○.

Noun

△(さんかく) 

1. not so good
2. (accounting) minus, equivalent of parentheses in English

Coordinate terms

• ◎
• ○
• ×