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Mathematics
Relationship Between Elements of a Circle
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Descriptions
Instructions
Show figure
Calculate
Area of the Circle (S)
Area of the Circular Segment (S')
Length of Circumference (C)
Arc AB
Radius (r)
Chord (w)
Sagitta (f)
Value of x
Value of y
1 Radius (r):
2 Angle (Ø):
^{º}
3 Chord (w):
4 Sagitta (f):
5 Value of x:
6 Value of y:
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Descriptions
Circle
 is the set of all points in a plane that are at a given distance from a given point, the centre
Radius (r)
 is a line segment joining the centre of the circle to any point on the circle itself
Circular Segment
 is a region of a circle which is "cut off" from the rest of the circle by a secant or a chord
Secante
 is an extended chord, a coplanar straight line cutting the circle at two points
Chord (w)
 is a line segment whose endpoints lie on the circle
Diameter (d)
 is a line segment whose endpoints lie on the circle and which passes through the centre
Sagitta (f)
 is the smallest of the two segments of the diameter of a circle determined by a perpendicular chord
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