if you want to learn how to use arc command in autocad 2018 then you came to the right place because in this video shown how to draw arcs in autocad 2018.

Arc command Applies to AutoCAD, AutoCAD Architecture, AutoCAD Civil 3D, AutoCAD Electrical, AutoCAD MEP, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD P&ID, AutoCAD Plant 3D, AutoCAD Structural Detailing, & AutoCAD Utility Design

you can Create arcs by specifying various combinations of center, endpoint, start point, radius, angle, chord length, and direction values.

Arcs are drawn in a counterclockwise direction by default. Hold down the Ctrl key as you drag to draw in a clockwise direction.



"Methods to create arcs in autocad" :-

► Draw Arcs by Specifying Three Points:
You can create an arc by specifying three points.


► Draw Arcs by Specifying Start, Center, End:
You can create an arc using a start point, center, and a third point that determines the endpoint.

The distance between the start point and the center determines the radius. The endpoint is determined by a line from the center that passes through the third point.


► Draw Arcs by Specifying Start, Center, Angle:
You can create an arc using a start point, center, and an included angle.

The distance between the start point and the center determines the radius. The other end of the arc is determined by specifying an included angle that uses the center of the arc as the vertex.

Using different options, you can specify either the start point first or the center point first.

► The included angle determines the endpoint of the arc. Use the Start, End, Angle method when you know both endpoints but cannot snap to a center point.


► Draw Arcs by Specifying Start, Center, Length:
You can create an arc using a start point, center, and the length of a chord.

The distance between the start point and the center determines the radius. The other end of the arc is determined by specifying the length of a chord between the start point and the endpoint of the arc.

Using different options, you can specify either the start point first or the center point first.

The length of the chord of the arc determines the included angle.


► Draw Arcs by Specifying Start, End, Angle:
You can create an arc using a start point, end point, and an included angle.

The included angle between the endpoints of the arc determines the center and the radius of the arc.

► Draw Arcs by Specifying Start, End, Direction:
You can create an arc using a start point, end point, and a tangent direction at the start point.

The tangent direction can be specified either by locating a point on the desired tangent line or by entering an angle. You can determine which endpoint controls the tangent by changing the order in which you specify the two endpoints.


► Draw Arcs by Specifying Start, End, Radius:
You can create an arc using a start point, end point, and a radius.

The direction of the bulge of the arc is determined by the order in which you specify its endpoints. You can specify the radius either by entering it or by specifying a point at the desired radius distance.



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