Creating Corners

	This task shows how to create a corner (arc tangent to two curves) between two lines using the different trimming options.
	This page deals with the following information: Trimming Both Lines Trimming the First Line No Trimming Trimming Both Lines Until their Intersection Trimming Both Lines and Creating Construction Lines Until their Intersection Trimming Both Lines and Creating Construction Lines Optimizing the Operation By Multi-Selection
	Open the Move_Corner.CATPart document.
	Click `Corner` . The possible corner options are displayed in the `Sketch tools` toolbar. The `Trim All Elements` option is selected by default. Trimming Both Lines Select the `Trim All Elements` option . Select the two lines. The two lines are joined by the rounded corner which moves as you move the cursor. This lets you vary the dimensions of the corner. Enter the corner radius value in the `Sketch tools` toolbar: `22mm` You can also click when you are satisfied with the corner dimensions. Both lines are trimmed at the points of tangency with the corner.

	Trimming the First Line Select the `Trim First Element` option . Select the two lines. The first line is trimmed.

	No Trimming
	Select the `No trim` option . Select the two lines. The corner is created. No line is trimmed.

	Trimming Both Lines Until their Intersection Select the `Standard Lines Trim` option . Select the two lines. The corner is created. The trimmed lines are set as standard lines.

	Trimming Both Lines and Creating Construction Lines Until their Intersection
	Select the `Construction Lines Trim` option . Select the two lines. The corner is created. The trimmed lines are set as construction lines.

	Trimming Both Lines and Creating Construction Lines
	Enter the Sketcher workbench and create two intersecting lines.
	Select the `Construction Lines No Trim` option `.` Select the two lines. The corner is created. The trimmed lines are set as non-trimmed construction lines.
	By default, centers are created but if you do not need them you can specify this in the `Options` dialog box. for this, go to `Tools > Options > Mechanical Design > Sketcher` option (`Sketcher` tab).). You can create corners between curves.

	Optimizing the Operation By Multi-Selection
	You can create several corners just by multi-selecting for example, the rectangle endpoints and enter a radius value in the `Radius` field (`Sketch tools` toolbar). Four corners are created at the same time with the same radius value.
	Double-clicking on `Formula` displays the parameter driving the radius value of the corners you have just created.

Creating Corners

Trimming Both Lines

Trimming the First Line

No Trimming

Trimming Both Lines Until their Intersection

Trimming Both Lines and Creating Construction Lines Until their Intersection

Trimming Both Lines and Creating Construction Lines

Optimizing the Operation By Multi-Selection