## #1 - Points of reflection (8 kyu)

**Instructions:**

"Point reflection" or "point symmetry" is a basic concept in geometry where a given point, P, at a given position relative to a mid-point, Q has a corresponding point, P1, which is the same distance from Q but in the opposite direction.

Task

Given two points P and Q, output the symmetric point of point P about Q. Each argument is a two-element array of integers representing the point's X and Y coordinates. Output should be in the same format, giving the X and Y coordinates of point P1. You do not have to validate the input.

**My notes:**

**My solution:**

```
function symmetricPoint(p, q) {
return [2*q[0]-p[0], 2*q[1]-p[1] ]
}
```

**Explanation**

I found the formula for getting the P1 coordinate, the formula is P1(2Qx - Px, 2Qy - Py), then I just passed this formula with the array index positions and returned the result as an array

## Top comments (0)