Hp Prime Graphing Calculator Manuel d'utilisateur télécharger pdf (Page 146)

100

101

142 Geometry

Creating or selecting an object always involves at least two

steps: tap and press

E. Only by pressing E do

you confirm your intention to create the point or select an

object. When creating a point, you can tap on the screen and

then use the cursor keys to accurately position the point before

pressing

Note that there are on-screen instructions to help you. For

example, Hit Center means tap where you want the center

of your object to be, and Hit Point 1 means tap at the

location of the first point you want to add.

You can draw any number of geometric objects in Plot view.

See “Geometric objects” on page 153 for a list of the objects

you can draw. The drawing tool you choose—line, circle,

hexagon, etc.—remains selected until you deselect it. This

enables you to quickly draw a number of objects of the same

type (such as a number of hexagons). Once you have finished

drawing objects of a particular type, deselect the drawing tool

by press

J. (You can tell if a drawing tool is still active by

the presence of on-screen help at the top left-side corner of the

screen, help such as Hit Point 1.)

An object in Plot view can be manipulated in numerous ways,

and its mathematical properties can be easily determined

(see page 150).

Object naming Each geometric object you create is given a name. In the

example shown on page 141, note that the circle has been

named C. Each defining point is also been named: the center

point has been named A, and the point tapped to set the

radius of the circle has been named B.

It is not only the points that

define a geometric object

that are given a name. Every

component of the object that

has any geometric

significance is also named.

If, for example, you create a

hexagon, the hexagon is

given a name as is each point at each vertex. In the example

at the right, the pentagon is named C, the points used to

define the hexagon are named A and B, and the remaining

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Hp Prime Graphing Calculator Manuel d'utilisateur Page 146

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