With Activity #3, we will be using Polar Coordinates.
Polar Coordinates are your way of saying, "From this starting point, move a specific distance away at a specific angle."
To the right is an example of Absolute, Relative and Polar Coordinates.
Below is a circle to show you what angles AutoCAD uses. (Memorize!)
To the right is a drawing using the numbers from the examples above.
So now you should understand the differences between Absolute, Relative and Polar Coordinates.
With Polar Coordinates, we only need a distance and an angle!
(Of course, this assumes that we already know our starting point. Polar coordinates would be impossible without a starting point!)
Draw Speaker Symbol
Save your work!
Credits: These activities were created by David Haney and/or created/modified by Brian Wilkins before being modified by Graham Rich. Many thanks to both David and Brian for sharing this work with us!
All AutoCAD Activities
|Activity||Name||Area of Learning|
|Activity 1||Title Block||Absolute Coordinates|
|Activity 2||Arrow||Relative Coordinates|
|Activity 3||Speaker Symbol||Polar Coordinates|
|Activity 4||Lines & Circle||Object Snaps|
|Activity 5a||Trim, Extend, Offset||Use Trim, Extend, Offset|
|Activity 5b & 5c||Select from 5a||Multi-Select with Mouse|
|Activity 6||Razor Blade||Mirrors, Snap to Quadrant, Snap to Center|
|Activity 7||Gear||Polar Array|
|Activity 8||Olympic Rings||Circles, Trim|
|Activity 9||Stop Sign||Offset, Polar Coordinates|
|Activity 10||House #1||Dimensions, Coordinates|
|Activity 11||Dartboard||Circles, Trim, Text|
|Activity 12||Canada Flag||Polar Coordinates, Offset, Trim, Extend, Dimensions|