# Constrain a deflection angle

On the context menu for editing, Deflection and Segment Deflection lock the direction of a new line segment to a deflection angle. They are available when you create a new polyline or polygon feature, or edit a finished feature with Continue Feature .

The angle is measured beginning with zero degrees as follows:

• Positive values are measured in a counterclockwise direction.
• Negative values are measured in a clockwise direction.

##### Note:

To work only with positive values, add 180 to negative values to convert them to positive angles. For example, a 45-degree angle (measured clockwise) becomes a 135-degree angle (measured counterclockwise).

## Deflection

To specify an angle measured from the last line segment, create a line segment, right-click, click Deflection , and specify the deflection angle. To remove the constraint, press the Esc key.

##### Note:

If you have created at least one vertex, skip to step 5.

1. On the Edit tab, in the Features group, click Create .

The Create Features pane appears and displays a list of feature templates.

2. Click a polyline or polygon feature template.

The template expands and displays feature construction tools.

3. Click the Line or Polygon tool.
4. Create the first segment using one of the following methods:
• Click the map in two locations.
• Right-click and use the context menu to specify x,y coordinate locations, distance, and direction.
5. Specify the deflection angle using one of the following methods:
• Right-click and click Deflection .
• Press the F key.

The Deflection dialog box appears.

When you work with z-enabled 3D features, the following dialog box appears:

6. On the Deflection dialog box, click the drop-down arrow, set the unit format, type the deflection angle, and press Enter.

The direction of the new segment is locked to the specified deflection angle. To remove the constraint, press the Esc key.

7. ##### Note:

When you work with z-enabled 3D features, specify an angular pitch in the z direction.

8. Create the second vertex and complete the segment using one of the following methods:
• Click the map.
• Right-click and click Distance , type the distance, and press Enter.
9. When you finish creating the feature, right-click and click Finish or press the F2 key.

## Segment deflection

To specify an angle measured from an existing segment, create a vertex, right-click the existing segment, click Segment Deflection , and specify the deflection angle. To remove the constraint, press the Esc key.

##### Note:

If you have created at least one vertex, skip to step 5.

1. On the Edit tab, in the Features group, click Create .

The Create Features pane appears and displays a list of feature templates.

2. Click a polyline or polygon feature template.

The template expands and displays feature construction tools.

3. Click the Line or Polygon tool.
4. Create the first vertex using one of the following methods:
• Click the map.
• Right-click and click Absolute X,Y,Z or press the F6 key, type the values on the dialog box, and press Enter.
5. Specify the deflection angle using one of the following methods:
• Right-click the existing segment and click Segment Deflection .
• Hover over the existing segment and press the F7 key.

The Segment Deflection dialog box appears.

When you work with z-enabled 3D features, the following dialog box appears:

6. On the Segment Deflection dialog box, click the drop-down arrow, set the unit format, type the deflection angle, and press Enter.

The direction of the new segment is locked to the specified deflection angle. To remove the constraint, press the Esc key.

7. ##### Note:

When you work with z-enabled 3D features, specify an angular pitch in the z direction.

8. Create the second vertex and draw the segment using one of the following methods:
• Click the map.
• Right-click and click Distance , type the distance, and press Enter.
9. When you finish creating the feature, right-click and click Finish or press the F2 key.