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Regular Polygon
The Regular Polygon tool constructs a regular convex or star polygon defined by a center point and n
sides (30 or less). A regular polygon consists of congruent sides and congruent angles. A point
placed on a regular polygon can be moved along the entire perimeter of the polygon.
Creating a regular polygon
1.
Select Regular Polygon from the Lines toolbox.
2.
Click to create or select the center point.
3.
Move the cursor from the center point, and click to
specify the radius of a regular polygon.
The number of sides is displayed at the center point.
4.
To create a regular convex polygon, move the cursor
clockwise from its current position.
To create a regular star polygon, move the cursor
counterclockwise, and click when the regular polygon
is the desired size.
Note: If you move beyond 30 sides or 180 degrees
from the initial vertex and the center point, a convex
polygon becomes a star polygon. A fraction is
displayed at the center point. The numerator
determines the number of sides; the denominator, the
number of times the star has crossed. The maximum
star is 30/13; the minimum is 5/2.
Copying permitted provided TI copyright notice is included
© 1997, 1999 Texas Instruments Incorporated
Create the center point.
Specify the size.
Rotate clockwise.
Pentagon.
Chapter 5: Using the Lines Toolbox
5-9
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