Velocities of endpoints and vectors.

Drag B.

The velocity of D is one half the velocity of B rotated 90o.

Therefore GD is 1/2 GB rotated 90o plus a constant vector.

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Rotated velocities and vectors
Figure 7b

Alfinio Flores
ASU

This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1997 by Key Curriculum Press, Inc. All rights reserved. Portions of this work are being funded by the National Science Foundation (awards DMI 9561674 & 9623018).