AutoCAD 2026 Arc Command details with 3 examples

An arc command is a segment of a circle or curved object that may be created in AutoCAD using the Arc Command. It can be defined in a number of ways with various choices. The most popular methods for creating an arc are broken down here, along with some examples.

Arc Command Syntax:

1. Arc by 3 Points (3P): Defines an arc using three points on the arc.
2. Arc by Start, Center, and End (S, C, E): Defines an arc using the start point, center point, and end point of the arc.
3. Arc by Start, End, and Radius (S, E, R): Defines an arc using the start point, end point, and radius.
4. Arc by Start, Center, and Angle (S, C, A): Defines an arc by specifying the start point, center point, and the included angle.

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Examples:

1. Arc by 3 Points (3P)

• Command: ARC → Select 3P (3 Points).
• Procedure: Click on three points that lie on the arc. The arc will be created passing through these three points.

Example:

• Points: (0, 0), (3, 4), and (6, 0).
• The arc will pass through these three points and form a smooth curve.

2. Arc by Start, Center, and End (S, C, E)

• Command: ARC → Select S, C, E (Start, Center, End).
• Procedure: First, select the start point of the arc. Then, select the center point. Finally, pick the end point of the arc.

Example:

• Start Point: (0, 0), Center Point: (5, 0), End Point: (5, 5).
• The arc will start at (0, 0), curve with its center at (5, 0), and end at (5, 5).

3. Arc by Start, End, and Radius (S, E, R)

• Command: ARC → Select S, E, R (Start, End, Radius).
• Procedure: Select the start point and end point of the arc, then specify the radius of the arc.

Example:

• Start Point: (0, 0), End Point: (4, 0), Radius: 2.
• An arc will be drawn with the specified radius from the start point to the end point.

4. Arc by Start, Center, and Angle (S, C, A)

• Command: ARC → Select S, C, A (Start, Center, Angle).
• Procedure: Choose a start point, then a center point, and finally define the angle of the arc.

Example:

• Start Point: (0, 0), Center Point: (3, 3), Angle: 90°.
• This will create an arc with a 90° angle starting from (0, 0) and centered at (3, 3).

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These are only a handful of the typical AutoCAD arc drawing techniques. The geometry and details you require for your design will determine the precise approach you choose. e Circle AutoCAD 2026 command! One AutoCAD 2026 command. It’s an effective tool for rapidly producing unique shapes and designs!