HP Prime Graphing Wireless Calculator Bedienungsanleitung Seite 231

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Rotation
A rotation is a mapping that rotates each point by a xed angle around a center point. The angle is dened
using the angle() command, with the vertex of the angle as the rst argument. Suppose you wish to rotate
the square (GC) around point K (GK) through LKM in the following gure.
1.
Tap , tap Transform, and select Rotation. rotation() appears on the entry line.
2. Between the parentheses, enter:
GK,angle(GK,GL,GM),GC
3.
Press or tap .
4.
Press to return to Plot view to see the rotated square.
Dilation
A dilation (also called a homothety or uniform scaling) is a transformation where an object is enlarged or
reduced by a given scale factor around a given point as center.
In the following gure, the scale factor is 2 and the center of dilation is indicated by a point near the top right
of the screen (named I). Each point on the new triangle is collinear with its corresponding point on the original
Plot view: Cmds menu 183
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