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YEAR 8
MATHS y8 EOYs
circles π
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Cards (11)
circumference
- its basically the outline /
perimeter
sector
- a portion of the circle that has been formed from the
centre
chord
- a line from any position of the circumference to another point (creating a segment) that is
straight
and doesn't go through the centre
diameter
- a
straight line
exactly through the middle of the circle
radius - a straight line from the
centre
of the
circle
to any other point on the circumference
tangent
- a
line
that just touches the edge of the circle
segment
- a fraction / portion of the circle that is outlined by the circumference and
chord
arc
- portion of the
circumference
pi
- 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067
to work out circumference - 2 X
pi
X
radius
to work out area - pi X
radius
X
radius
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