HP Prime Geometry App Tutorial Part 4: Tangent Lines and Changing the Color of
Objects
Plotting Lines
Tangent to a Circle’s Point
1. Start with a clear
plot screen. Draw a circle: the location of its center and size is up to
you.
2. Press (Cmds), 3
for Line, 6 for Tangent.
3. Select a point on
the circle and press [ Enter ]. The
point is designated as object GD.
4. If you wish,
display the coordinates of GD. See Part
3 as a refresher.
Per HP Prime’s help:
The tangent command draws one or more tangent lines through a specified
point to the circle and the line segment connecting it to the radius.
Coloring the Tangent
Lines
The following steps is how to color tangent lines. By default, geometric objects are colored
black. Adopt this procedure for any
geometric object you want to designate as a specific color.
1. Move to the
tangent lines so that they turn red.
The (Optns) soft menu appears. It
is key that the (Optns) menu is available.
2. Press (Optns), 1
for Choose Color, choose any color you want.
If the pictures, I have selected blue.
In order to see the different color, move the cursor away from the
tangent lines.
What does Part 5 mean?
It’s time to plot some functions! That is next time.
Eddie
This blog is property of Edward Shore. 2015
