Texas Instruments TINSPIRE Manual Book page 517

Lengthening the visible part of a line or ray
1. On the
Actions
2. Grab the end of the visible line or ray, and drag to lengthen or
shorten it.
Creating a segment
1. From the
Points & Lines
2. Click to define the first endpoint of the segment.
Note: If you press and hold
limit its orientation (relative to the x-axis or the horizontal aspect of
the screen), by 15- increments.
3. Move the pointer and click again to define the second endpoint of
the segment.
Graphs & Geometry draws the segment on the page.
Creating a segment with a defined midpoint
With the Midpoint tool, you can define a midpoint on an existing line
segment, between two specified points on a line, or between two points
as you create the points. (When you select the second point, the
midpoint is created.)
1. From the
Construction
2. Click at the location to start the segment.
As you move the pointer, a second point, the midpoint, appears.
3. You can move the segment in any direction until you click on the
work area a second time.
With the second click, the segment is anchored and the midpoint
remains identified.
menu, select
Pointer
menu, select
g
menu, select Midpoint.
.
.
Segment
while creating the segment, you
Graphs & Geometry 505