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单词 bitangent
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Examples ofbitangent

Dictionary> Examples ofbitangent
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Bitangentlines can also be defined when one or both of the circles has radius zero.
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If both circles have radius zero, then thebitangentline is the line they define, and is counted with multiplicity four.
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Furthermore, it is included in everybitangentplane.
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Bitangentlines can also be generalized to circles with negative or zero radius.
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If counted with multiplicity (counting a common tangent twice) there are zero, two, or fourbitangentlines.
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Finally, if the two circles are identical, any tangent to the circle is a common tangent and hence (external)bitangent, so there is a circle's worth of bitangents.
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Bzout's theorem implies that a plane curve with abitangentmust have degree at least 4.
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If one circle has radius zero, abitangentline is simply a line tangent to the circle and passing through the point, and is counted with multiplicity two.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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更新时间：2025/10/30 22:19:07