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Parts of the circumference

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In this video I will explain the parts of the circumference. It is easy to think of a circumference, but if they tell us that acircumference has different parts, it may seem strange to us and we may not be able to say how many parts a circumference has, what are all of them and what function they have.

The circumference is the set of points that are equidistant from another point called the center and that are always at the same distance, a distance that we will call the radius.

Although there are some very basic elements in a circumference, such as the center, the diameter or the radius, there are several more elements that we must also know. These are the parts of the circumference:

  • Thecenter: is the interior and center point of a circle.
  • Theradio: is the distance from the center to any point on the circumference.
  • Thediameter: It is the segment that joins the points of the circumference passing through the center of the circle.
  • Thestring: is a segment that joins two points of a circle.
  • Thebow: It is each of the curved parts of the circumference that is formed by a chord.
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  • The secant line: is the line that cuts the circumference at two points.
  • The tangent line: is the line that touches a single point on the circumference.

In the video you will see all the parts of the circumference while we do one and we are commenting one by one these parts in a clearer way. Also, if you have any questions about what you have seen in the video you can do the printable exercises with their solutions that I have left you on the web.
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