GCSE Maths (Edexcel)

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Defining Circles

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Geometry and Measures Properties and Constructions

Defining Circles

1:58 Parts of a Circle
Spec G9
Previous Combining Transformations Next Sectors, Arcs & Segments
  • Some 2D shapes consist of one curved edge with no vertices
  • A circle is a shape with a single curved edge where all points on the edge are the same distance from a central point
  • Circles have an infinite number of lines of symmetry and an infinite order of rotational symmetry
  • Circles and parts of circles are the only curved shapes needed to know at GCSE
  • Circles are used in technology, such as wheels, because they roll easily and have no vertices to catch on
  • Circles are also used in ferris wheels because everyone on the wheel has the same experience

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