Definition:Deltoid (Hypocycloid)

This page is about deltoid in the context of analytic geometry. For other uses, see deltoid.

Definition

A deltoid is a hypocycloid with $3$ cusps.

Also see

• Equation of Deltoid

• Results about deltoids in the context of hypocycloids can be found here.

Sources

• 1992: George F. Simmons: Calculus Gems ... (previous) ... (next): Chapter $\text {B}.21$: The Cycloid: Problem $11$
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): deltoid: 2.