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standard form of the equation of a circle

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standard form of the equation of a circle

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Circumference of a Circle:
C=2πr

Area of a Circle:
A=πr^2

standard form of the equation of a circle:
(x – h)^2 + (y – k)^2 = r^2

Arch Length: 2πR(C/360)

Area of a Sector
A = (sector angle / 360 ) * (pi *r2)

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An inscribed angle is an angle formed by two chords in a circle which have a common endpoint.

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A central angle is an angle whose apex (vertex) is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points A and B

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a half of a circle or of its circumference

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Given two points on a circle, the minor arc is the shortest arc linking them. The major arc is the longest

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a part of the circumference of a circle or other curve

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is the portion of a disk enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector

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the ratio of the hypotenuse to the shorter side adjacent to an acute angle

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A chord of a circle is a straight line segment whose endpoints both lie on the circle.

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a line that touches the circle at exactly one point, never entering the circle's interior

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a straight line from the center to the circumference of a circle or sphere

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a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

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a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center).