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Geometry Symbols
basic symbols used in geometry
| Question | Answer |
|---|---|
| ∟ | Right Angle |
| ∠ | Angle |
| || | Parallel lines (two lines that never touch) |
| ⊥ | Perpendicular lines (two lines that meet at a 90 degree angle) |
| O | degree (what angles are measured in) |
| Δ | Triangle |
| ~ | Similar (same shape, but different sizes) |
| ≅ | Congruent (exactly the same shape and size) |
| __ with AB below | Line segment named by endpoints A and B |
| ↔ with AB below | Never ending line named by two points A and B |
| → with AB below | Ray: a line with one end point at A and continues forever towards point B |
| • | A point, generally named by a using a letter |
| m∠ | measure of the angle |