# Arc

The **Arc** command draws an arc with options for a center location, one end point, and a second end point or an angle.

## Insert an arc

Steps:

- Pick the center of the arc's radius.
- Pick the arc's first endpoint. This point is also the arc's start point.
- Pick the arc's second end point, or type an angle.

Arc

## Command-line options

**Default**

Draws an arc starting from the center of the arc's radius.

**Tilted**

Draws an arc whose plane is tilted from the current construction plane.**Length**: Sets the arc length as measured along the arc. Type a positive or negative number, or pick two points to specify the arc curve's length.**Midpoint**: Draws an arc from its midpoint.

**Deformable**

The Deformable option draws a NURBS approximation of the arc with a specified degree and number of control points.

**Degree**Specifies the degree of the arc. When drawing a high-degree arc, the output curve will not be the degree you request unless there is at least one more control point than the degree.**PointCount**Specifies the number of control points.

** StartPoint**

Draws an arc starting from the first end of the arc.

**Direction**Specifies the direction of a line tangent to the arc's start point.**ThroughPoint**Specifies a location the arc curve must pass through.**Center**Specifies a center point for the arc's radius.

**Tangent**

The Tangent option draws an arc tangent to selected curves with options to pick a point not on the selected curves or to specify a radius. Each prompt allows you to pick a point that is not on a curve for the arc to pass through. At some prompts, the option to enter a radius appears.

**Point**The Point tangent option appears for each prompt. It releases the command from the tangent constraint for that pick.**FromFirstPoint**Forces the arc to go through the first picked point on the curve instead of allowing the point to slide along the curve.

**Extension**

Extends a curve with an arc to a specified end point.

**Center**Extends a curve with an arc by from a specified center and end point.