public Vector2D average(Vector2D v) { return weightedSum(v, 0.5); }
public Vector2D average(Vector2D v) { return weightedSum(v, 0.5); }
public Vector2D average(Vector2D v) { return weightedSum(v, 0.5); }
public Vector2D average(Vector2D v) { return weightedSum(v, 0.5); }