TI-83 Plus GeoMaster™ Application Page 50
Dilating an Object
You can enlarge or reduce an object using the
Dilation
tool.
Dilation transforms each segment of an object to a parallel line
whose length is a fixed multiple of the length of the original line
segment. An object is dilated with respect to a point. When an
object is dilated, the original object is deleted.
Dilation is usually defined as a transformation determined by a
center point C and a scale factor k>0. This application also
allows k<0.
1. Draw an object.
2. Draw a reference point
.
If you want to dilate an object with reference to its geometric
center (or a default point, if the object does not have a center,
such as a ray), you do not need to draw a point.
3. Select
Dilation
from the
TRFM
menu.
4. Select the object to dilate.
5. Select the reference point, unless you want to use the
object's geometric center.
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