of a circle is the boundary line or the perimeter of the circle. Read more: https://www.emathzone.com/tutorials/geometry/the-circle-and-parts-of-a-circle.html#ixzz5CvDiWepS
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Card 7
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is a part of the circumference between two points or a continuous piece of a circle. Read more: https://www.emathzone.com/tutorials/geometry/the-circle-and-parts-of-a-circle.html#ixzz5CvDmq087
