# Geometry Symbols

Geometry Symbols: Geometry is a branch of mathematics that deals with the properties of configurations of geometric objects – (straight) lines, circles and points being the most basic.

The area of mathematics that deals with space, lines, shapes and points

• Plane Geometry is about flat shapes like triangles, circles, and lines,
• Solid Geometry is about solid (3-dimensional) shapes like spheres and cubes.

## Geometry Symbol Chart

Letâ€™s explore the typical Geometry symbols and meanings used in both basic Geometry and more advanced levels through this geometry symbol chart.

### Example

âˆ  angle formed by two rays âˆ ABC = 30Âº
âˆŸ right angle = 90Âº Î± = 90Âº
âˆ¢ spherical angle an angle, which is formed by the intersection of 2 great circles of the sphere. AOB = 30Âº
Â´ arcminute 1Âº = 60Â´ Î± = 60Âº59′
Âº degree 1 turn = 360Âº Î± = 60Âº
Â´Â´ arcsecond 1Â´ = 60Â´Â´ Î± = 60Âº59’59”
$$\begin{array}{l}\overrightarrow{AB}\end{array}$$
ray line that start from point A
AB line segment the line from point A to point B
| perpendicular perpendicular lines (90Âº angle) AC | BC
â‰… congruent to equivalence of geometric shapes and size âˆ†ABC â‰…âˆ†XYZ
|| parallel parallel lines AB || CD
Î” triangle triangle shape Î”ABC â‰…Î”BCD
~ similarity same shapes, not the same size âˆ†ABC ~âˆ†XYZ
Ï€ pi constant Ï€ = 3.141592654…

is the ratio between the circumference and diameter of a circle

c = Ï€Â·d = 2Â·Ï€Â·r
|xy| distance distance between points x and y | xy | = 5