Construction Aid Tangent > Object - Object (Construct Menu)

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This command draws a Construction Aid endless line which is tangent to two circles or ellipses.

 

1.Identify reference circle / ellipse 1

Any circle or ellipse which exists independently or as part of another object can be identified as the first reference object. This can also be the arc of an ellipse segment or a circle arc within a surface.

 

The position at which the (part) object is identified (the "ID point) affects the way in which the rest of the command is carried out. If a tangent is placed on two circles, there are up to four possible results. Together with the second ID point, this ID point determines which of the four possible tangents should be used (see below).

 

2.Identify reference circle / ellipse 2

Any circle or ellipse which exists independently or as part of another object can be identified as the second reference object. This can also be the arc of an ellipse segment or a circle arc within a surface.

 

The position at which the (part) object is identified (the "ID point) affects the way in which the rest of the command is carried out. If a tangent is placed on two circles, there are up to four possible results. Together with the first ID point, this ID point determines which of the four possible tangents should be used (see below).

 

 

If one circle or ellipse lies wholly within another, it is not possible to work out a line tangent to both objects. In this case, a corresponding error message appears.

 

 

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