# How to rotate a point about another point

**linear functions**:

- What Exactly is a Matrix?
- Geometric Perspective on Linear Transformations
- System of Linear Equations
- How to rotate a point about the origin
- How to rotate a point about the origin (way 2)
- How to rotate a point about another point
- How to rotate a point about another point (way 2)

You have some point and you want to rotate it degrees about another point .

As always, we draw the situation (including the knowns, unknowns, and any needed auxillary elements). We then try to express our unknown (the new point, ) in terms of our knowns.

Here is an implementation of the above solution in iodide.