3.12 ARCS (AUTOCAD)

Match the misconceptions with correct solutions:

• Which arc command do I use?

• To choose the right arc command consider the known information about the arc, such as its radius, angle, start and end points, and direction.

• How can I extend my arc?:

• To extend the most recently drawn arc, simply click the "Continue" button located under the arc tool in the Draw ribbon.

• The direction of my arc is incorrect.

• While drawing your arc, holding the "Ctrl" key will invert its direction.

• Can I extend my arc to close it?

• No, you will need to use the circle command.

Place the following steps to use the ARC command in AutoCAD in order:

• Specify the second point.

• Type 'A' or select the 'ARC' command

• Specify the final point on the arc.

• Specify start point.

Organize these options into the right categories

Groups:

(a) Roman Colosseum

,

(b) St. Louis Gateway Arch

,

(c) The Persistence of Memory

• An architectural marvel with a series of arches, offering both structural stability.

• Features melting clocks draped over various objects, including a distorted arc-like shape.

• 
• 
• 
• A monumental stainless steel structure symbolizing westward expansion in the US.

Discuss the importance and various applications of using the ARC command in fields like art and engineering, providing specific examples.

Match the applications with the appropriate descriptions:

• Eyeglass Frames

• Developing the curvature of seating arrangements and structural elements using arcs for optimal audience visibility.

• Dome Structures

• Implementing arcs to create the underlying structural outline of dome-shaped buildings or features.

• Stadiums and Theaters

• Using arcs to design architectural elements like doors or windows with curved tops.

• Archways

• Applying arcs to design the curvature of stylish and ergonomic eyewear frames.

What does the ARC command in AutoCAD create?

• A rectangle

• A piece of a circle or a curved line

• A straight line

• A full circle

What is the shortcut for the ARC command in AutoCAD?

Multiple Choice - In AutoCAD, "​ (a)   " refers to the distance along the curved path of the arc. "​ (b)   " denotes whether the arc follows a clockwise or counterclockwise orientation. Lastly, "​ (c)   " is the amount of rotation needed to trace the arc's curvature.

• length
• direction
• angle
• radius

Illustrate how arcs can be used to design a basic eyeglass frame.

How can the direction of an arc be changed while drawing?

• Right-click and select "Reverse"

• Press the "Shift" key

• Press the "Ctrl" key

• Use the "Direction" modifier