	Name	Description
	Angle2Points(Vector2, Vector2)	Obtains the angle between two points.
	Angle2Points(Vector3, Vector3)	Obtains the angle between two points.
	ArbitraryAxis	Gets the rotation matrix from the normal vector (extrusion direction) of an entity.
	ArcAnglesFrom3Points	Returns the start angle and the end angle of a arc specifing start point, end point and a point on it.
	BulgeArea	Returns the bulge area.
	BulgeLenght	Returns the bulge lenght.
	BulgeParam	Returns the bulge parameters like center, radius, etc.
	CircleCenterFrom3Points	Returns the center point of a arc/circle passing for three points.
	ClockwisePolygon	Determines the points of polygon are in clockwise order.
	ClosedLoop	Checks if a list of entites are a closed loop.
	CoincidentEntities	Finds the coincident entities of a drawing.
	DistanceFromArc	Returns the distance of a point from an arc.
	EntitiesExtensions	Find the extensions of a group of entities.
	EntitiesInsideEntities	Checks if a list of entities is full contained in another list of entities.
	EntitiesOutsidePoint	Identify the entities that form a closed loop surrounding a given point from a list of entities.
	EntitiesToPolygon	Returns a list of vectors of given entites.
	EntityInsideEntities	Checks if an entity is contained in a list of entities representing a closed contour.
	EntityInsideEntity	Checks if an entity is contained in another entity.
	EntityInsidePolygon	Checks if an entity is contained in a list of vectors representing a polygon.
	EntityOutsidePoint	Find the entity surrounding a given point from a list of entities.
	ExternalContour	Find the external contour of a group of entities.
	FindArcArcIntersections	Calculates the intersection points of two arcs.
	FindArcCircleIntersections	Calculates the intersection points of an arc and a circle.
	FindCircleCircleIntersections	Calculates the intersection points of two circles.
	FindClosedAreaData	Finds the data of a closed area formed of given entites.
	FindIntersection(Vector2, Vector2, Vector2, Vector2)	Calculates the intersection point of two lines.
	FindIntersection(Vector2, Vector2, Vector2, Vector2, Double)	Calculates the intersection point of two lines.
	FindIntersections	Find intersection points between two entities.
	FindLineArcIntersections	Calculates the intersection points of a line and an arc.
	FindLineCircleIntersections	Calculates the intersection points of a line and a circle.
	FindLineLineIntersection	Calculates the intersection point of two lines.
	FindLoops	Finds single loops among a list of entities.
	FindMinimumAreaBoundingRectangle	Finds the minimum area bounding rectangle for a given collection of entities.
	FindParts	Finds single parts among a list of entities.
	FootPerpendicular	Find the foot of a perpendicular.
	IntersectionPoints	Find intersection points of a group of entities.
	IsEqual(Double, Double)	Checks if a number is equal to another.
	IsEqual(Double, Double, Double)	Checks if a number is equal to another.
	IsOne(Double)	Checks if a number is close to one.
	IsOne(Double, Double)	Checks if a number is close to one.
	IsZero(Double)	Checks if a number is close to zero.
	IsZero(Double, Double)	Checks if a number is close to zero.
	NearestPointToArc	Finds the nearest point on arc to a given point.
	NearestPointToCircle	Finds the nearest point on circle to a given point.
	NormalizeAngle	Normalizes the value of an angle in degrees between [0, 360[.
	NotConnectedEntities	Returns a list of not connected entities among a list of entities.
	NotConnectedPoints	Checks if in a group of entities there are not connected points.
	PointBelongsToEllipse	Determines if the given point is on the ellipse contour.
	PointInPolygon(EntityObject, Vector2)	Determines if the given point is inside the polygon defined by an entity.
	PointInPolygon(IEnumerableEntityObject, Vector2)	Determines if the given point is inside the polygon defined by a list of entities.
	PointInPolygon(ListVector2, Vector2)	Checks if a point is contained in a list of vectors representing a polygon.
	PointInPolygon(Vector2, Vector2)	Determines if the given point is inside the polygon.
	PointInRectangle	Checks if a point is inside a rectangle.
	PointInSegment	Checks if a point is inside a line segment.
	PointOnArcSegment	Checks if a point is inside an arc segment.
	PointOnLineSegment	Checks if a point is inside a line segment.
	PolygonArea	Returns the area value of a polygon.
	PolygonCenter	Determines the center of a polygon.
	PolygonInPolygon	Checks if a polygon is full contained in a polygon.
	PolygonLenght	Returns the lenght value of a polygon.
	RotateAboutAxis	Rotate given vector of angle in radians about a specified axis.
	Round	Rounds a double-precision floating-point value accordind the epsilon property.
	RoundToNearest	Round off a numeric value to the nearest of another value.
	SortLineArcEntities	Sorts a list of arc and lines.
	Transform(IEnumerableVector2, Double, CoordinateSystem, CoordinateSystem)	Transforms a point list between coordinate systems.
	Transform(IEnumerableVector3, Vector3, CoordinateSystem, CoordinateSystem)	Transforms a point list between coordinate systems.
	Transform(Vector2, Double, CoordinateSystem, CoordinateSystem)	Transforms a point between coordinate systems.
	Transform(Vector3, Vector3, CoordinateSystem, CoordinateSystem)	Transforms a point between coordinate systems.
	TriangleArea	Calculates area of a triangle.
	ZeroLenghtEntities	Returns a list of zero lenght entities among a list of entities.

	Name	Description
	DegToGrad	Constant to transform an angle between degrees and gradians.
	DegToRad	Constant to transform an angle between degrees and radians.
	GradToDeg	Constant to transform an angle between degrees and gradians.
	HalfPI	PI/2 (90 degrees)
	PI	PI (180 degrees)
	RadToDeg	Constant to transform an angle between degrees and radians.
	ThreeHalfPI	3*PI/2 (270 degrees)
	TwoPI	2*PI (360 degrees)

MathHelper Class

Reference