Get 0-360 Angle Between 2D Lines

getangle.cs

	Vector3 from = p1-pMiddle;
	Vector3 to = p2-pMiddle;
	float angle = AngleBetween(from, to);
			
			

	float AngleBetween(Vector3 vector1, Vector3 vector2)
	{
		var sin = vector1.x * vector2.y - vector2.x * vector1.y;  
		var cos = vector1.x * vector2.x + vector1.y * vector2.y;
		float angle = Mathf.Atan2(sin, cos) * (180f / Mathf.PI);
		if (angle<0) angle+=360;
		return angle ;
	}