Why is a cardioid called a cardioid?

A cardioid (from the Greek ?????? "heart") is a plane curve traced by a point on the perimeter of a circle that is rolling around a fixed circle of the same radius. Named for its heart-like form, it is shaped more like the outline of the cross section of a round apple without the stalk.

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How do you pronounce lemniscate?

People also ask which card represents the holy grail? 12/21: Which suit of cards represents the Holy Grail? Answer: hearts.

What is the devil's shape?

Devil's curves were studied heavily by Gabriel Cramer. The name comes from the shape its central lemniscate takes when graphed. The shape is named after the juggling game diabolo, which was named after the Devil and which involves two sticks, a string, and a spinning prop in the likeness of the lemniscate. What is a lemniscate curve? The lemniscate, also called the lemniscate of Bernoulli, is a polar curve defined as the locus of points such that the the product of distances from two fixed points and (which can be considered a kind of foci with respect to multiplication instead of addition) is a constant .

What is a convex limacon?

When the value of a is greater than or equal to the value of 2b, the graph is a convex limacon. r = 2 ? 2 sin ? When the value of a equals the value of b, the graph is a special case of the limacon.