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  1. In geometry, a circle is a closed curve formed by a set of points on a plane that are the same distance from its center O. That distance is known as the radius of the circle. Diameter. The diameter of a circle is a line segment that passes through the center of the circle and has its endpoints on the circle. All the diameters of the same circle ...

  2. In geometry, a circle is a closed curve formed by a set of points on a planeplane that are the same distance from its center O. That distance is known as the radius of the circle. Diameter. The diameter of a circle is a line segment that passes through the center of the circle and has its endpoints on the circle. All the diameters of the same ...

  3. Pass through the center. Be straight lines. Touch the boundary of the circle at two distinct points which lie opposite to each other. Chord of a Circle: A chord is any line segment touching the circle at two different points on its boundary. The longest chord in a circle is its diameter which passes through the center and divides it into two ...

    • is a figure a line segment that passes through the center of mass of a circle1
    • is a figure a line segment that passes through the center of mass of a circle2
    • is a figure a line segment that passes through the center of mass of a circle3
    • is a figure a line segment that passes through the center of mass of a circle4
    • is a figure a line segment that passes through the center of mass of a circle5
  4. Circles are named by naming the center. Radius: Any segment with one endpoint at the center of the circle and the other endpoint on the circle is a radius. (The plural of radius is radii.) Chord: Any segment whose endpoints lie on the circle is a chord. Diameter: Any chord that passes through the center of the circle is a diameter. In Figure 1:

  5. The Circle in Standard Form. A circle 8 is the set of points in a plane that lie a fixed distance, called the radius 9, from any point, called the center.The diameter 10 is the length of a line segment passing through the center whose endpoints are on the circle.

  6. May 23, 2021 · The diameter (d) is the length of the line segment with end points on the circle that passes through its center. It is the longest distance across a circle. The diameter is twice the length of the radius. d = 2r; d = C/π; Measure the diameter by finding the longest line segment across a circle. How to Find the Radius of a Circle

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  8. Aug 3, 2023 · Parts and Properties. Parts of a Circle. 1) Radius – The line that joins the center of the circle to the outer boundary. It is usually represented by ‘ r ’ or ‘ R ’. The plural of radius is called radii. 2) Diameter – The line segment whose endpoints lie on the circle and that passes through the center. Its length is twice the ...