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Q: What is a radii of a circle?

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NO. All the radii of a circle are of exactly the same length. In fact, that is the definition of the locus of a point describing a circle.

The area bounded by an arc of circle and two radii is known as a "circular sector"

sector

Isn't it the radii?

Radii are always positive. No, it is not possible to draw a circle with negative radius.

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All the radii of a circle are of equal length. The radius is the distance from the center of the circle to the out edge. Having equal radii is what defines a circle.

Yes, all of the radii in a single circle are congruent.

The sum of two radii of a circle is the same as the diameter of the circle.

Yes, providing that the radii are all in the same circle

Yes. All radii of the same circle have the same length.

A part of a circle enclosed by two radii is called a sector.

The radius(radii is the plural) of the circle is half the distance of circle's diameter. The formula is r=(1/2)diameter.

Well, the equation for finding the circumfrence of a circle is (diameter)(pi). That is diameter times pi. since the diameter of a circle is 2 radii, we can say that there is 2(pi) radii in a circle.

I always called it an arc. It is simply a section of the circle. The ends are determined by the two radii you referenced. Each of the radii start at the center of the circle and end at their intersection with the circle. The portion of the circle that lies between the ends of the two radii is an arc.

A radii is just a plural form of radius. A circle doesnt have one radius. The term radii is mostly used when talking about multiple circles.

NO. All the radii of a circle are of exactly the same length. In fact, that is the definition of the locus of a point describing a circle.

The plural of 'radius' is 'radii', not 'radiuses'. A circle has an infinite number of radii, but they are all of the same length.

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