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Geometry 161
Geometric transformations
The Transform menu—displayed by tapping
—provides numerous tools for you to perform
transformations on geometric objects in Plot view. You can
also define transformations in Symbolic view
Translation A translation is a transformation of a set of points that moves
each point the same distance in the same direction. T: (x,y) →
(x+a, y+b). You must create a vector to indicate the distance
and direction of the translation. You then choose the vector
and the object to be translated.
Suppose you want to
translate circle B at the right
down a little and to the right:
1. Ta p
and select
Vector.
2. Draw a vector in the
direction you want to
translate the circle and
of the same length as move you intend. (If you need help,
see “Vector” on page 156.)
3. Tap and select Translation.
4. Tap the vector and press
E.
5. Tap the object to be
moved and press
E.
The object is moved the
same length as the
vector and in the same
direction. The original
object is left in place.