Constructing Perpendicular And Parallel Lines - Texas Instruments TI-89 User Manual

Constructing Perpendicular and Parallel Lines

Constructing a
Perpendicular Line
Note: The order of steps 3
and 4 can be reversed.
Note: You can move the
perpendicular line by
dragging the point through
which the line passes or by
changing the orientation of
the object to which it is
perpendicular.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
The toolbar menu contains tools for constructing
Construction
objects in relation to other objects, such as perpendicular and
parallel lines.
The tool creates a line passing through a point
Perpendicular Line
and perpendicular to a selected linear object (line, segment, ray,
vector, side of a polygon, or axis).
1. Create any object having linear
properties such as the triangle shown
in this example.
2. Press † and select
1:Perpendicular
.
Line
3. Move the cursor to a side or object
through which you want the
perpendicular line to pass then press
¸.
4. Move the cursor to the point through
which you want the perpendicular
line to pass then press ¸.
5. Drag one of the vertices of the
triangle to change its orientation.
Select a linear object.
Select a point.
A dependent perpendicular
line is drawn.
Change the orientation.
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