Geometry Circles Formulas
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11 Terms
1
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Two Chords
piece x piece = piece x piece
2
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two secants
outside x whole = outside x whole
3
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two tangents
tangent = tangent
4
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one secant and one tangent
tangent2 = outside x whole
5
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central angle
angle = arc measure
6
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inscribed angle
angle = half of arc measure
7
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inside angle
angle = ½ (arc+arc)
8
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density
mass/volume
9
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outside angle
½ (big- small)
10
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area of a sector
degree measure of the arc = arc length
360 pi r2
11
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arc length
degree measure of the arc = arc length
pi diameter
360