## What are the symbols in geometry?

Geometry Symbol Chart

Symbol | Symbol Name | Meaning/definition of the Symbols |
---|---|---|

Δ | triangle | triangle shape |

~ | similarity | same shapes, not the same size |

π | pi constant | π = 3.141592654… is the ratio between the circumference and diameter of a circle |

|x–y| | distance | distance between points x and y |

**What is this symbol Ø in math?**

The letter “Ø” is sometimes used in mathematics as a replacement for the symbol “∅” (Unicode character U+2205), referring to the empty set as established by Bourbaki, and sometimes in linguistics as a replacement for same symbol used to represent a zero.

**What does ∼ mean in geometry?**

“∼” is one of many symbols, listed in the Wikipedia article on approximation, used to indicate that one number is approximately equal to another. Note that “approximately equal” is reflexive and symmetric but not transitive. “∼” is one of many symbols used in logic to indicate negation.

### Does Ø or 0 have a line through it?

The slashed zero glyph is often used to distinguish the digit “zero” (“0”) from the Latin script letter “O” anywhere that the distinction needs emphasis, particularly in encoding systems, scientific and engineering applications, computer programming (such as software development), and telecommunications.

**What does ∆ mean in geometry?**

Uppercase delta (Δ) at most times means “change” or “the change” in maths. Consider an example, in which a variable x stands for the movement of an object. So, “Δx” means “the change in movement.” Scientists make use of this mathematical meaning of delta in various branches of science.

**What is a 0 with a dot in the middle?**

Typewriters originally made no distinction in shape between O and 0; some models did not even have a separate key for the digit 0. The distinction came into prominence on modern character displays. The digit 0 with a dot in the centre seems to have originated as an option on IBM 3270 displays.