Function extendFromA

extendFromA(line: Geometry.Line, distance: number): Geometry.Line
Returns a line extended from its a point by a specified distance
```
import { Lines } from 'https://unpkg.com/ixfx/dist/geometry.js'
const line = {a: {x: 0, y:0}, b: {x:10, y:10} }
const extended = Lines.extendFromA(line, 2);
```
Parameters
- line: Geometry.Line
- distance: number
Returns Geometry.Line
Newly extended line