Texas Instruments TI-Nspire, Руководство пользователя

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Graphs & Geometry 505
Lengthening the visible part of a line or ray
1. On the
Actions
menu, select
Pointer
.
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 menu, select Segment .
2. Click to define the first endpoint of the segment.
Note: If you press and hold
g
while creating the segment, you
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 menu, select Midpoint .
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.