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.

• Can I extend my arc to close it?

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

• The direction of my arc is incorrect.

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

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

• Specify start point.

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

• Specify the final point on the arc.

• Specify the second 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.

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

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

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:

• Archways

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

• Eyeglass Frames

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

• Dome Structures

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

• Stadiums and Theaters

• 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?

(a)  

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