Connected Astroids
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An astroid has the parametric equation . It can also be defined as the envelope of a line segment whose ends slide along the coordinate axes.
Contributed by: Sándor Kabai (March 2011)
Open content licensed under CC BY-NC-SA
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"Connected Astroids"
http://demonstrations.wolfram.com/ConnectedAstroids/
Wolfram Demonstrations Project
Published: March 7 2011