Naming Objects

You can assign a certain name to an object when you create it using the Input Bar:

Points: In GeoGebra, points are always named using upper case letters. Just type in the name (e. g., A, P) and an equal sign in front of the coordinates or commands.

Example: C = (2, 4), P = (1; 180°), Complex = 2 + i

Vectors: In order to distinguish between points and vectors, vectors need to have a lower case name in GeoGebra. Again, type in the name (e. g., v, u) and an equal sign in front of the coordinates or commands.

Example: v = (1, 3), u = (3; 90°), complex = 1 – 2i

Lines, circles, and conic sections: These objects can be named by typing in the name and a colon in front of their equations or commands.

Example: g: y = x + 3, c: (x-1)^2 + (y – 2)^2 = 4, hyp: x^2 – y^2 = 2

Functions: You can name functions by typing, for example, f(x) = or g(x)= in front of the function’s equation or commands.

Example: h(x) = 2 x + 4, q(x) = x^2, trig(x) = sin(x)

Note:

If you don’t manually assign a name to an object, GeoGebra assigns the names of new objects in alphabetical order.
You can create indices within the names of objects by using an underscore. For example A₁ is entered as A_1 and s_AB is entered as s_{AB}.