Function triangleA

triangleA(b: number, h: number): number
Calculates the area of a triangle.
Parameters
- b: number
  The base
- h: number
  The height
Returns number
Example
```
// Returns 17.5
const area = Chalkboard.geom.triangleA(5, 7);
```
- Defined in Chalkboard.geom.ts:482