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# The circumference

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The circumference

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### The circumference

1. 1. The circumference Elements of a circumference
2. 2. The circumference A circumference is a closed flat curved where all its points are equidistant from the fixed centre point The flat surface outlined by the circumference is called circle
3. 3. Elements of a circumference Diameter . All the straight line that go through the centre of the circumference and intersect it at two points Radius . It is the segment that connects the centre of the circumference to any other point Secant . It is a straight line that intersects a circumference at two points Tangent . It is a straight line that crossed the circumference at only the point known as tangent point Arc . It is the fragment of the circumference between any two points Chord . It is the segment that connects any two points of the circumference Diameter Radius Secant Tangent Arc Chord
4. 4. Activities <ul><li>Draw a circumference with radius=5cm </li></ul><ul><li>Draw a chord with length=6cm </li></ul><ul><li>Draw an arc </li></ul>