Difference between revisions of "Measure"
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The measure of <math>\angle ABC</math> is indicated by <math>\mbox{m}\angle ABC</math>. If <math>\angle ABC\cong\angle DEF</math>, then <math>\mbox{m}\angle ABC=\mbox{m}\angle DEF</math>. | The measure of <math>\angle ABC</math> is indicated by <math>\mbox{m}\angle ABC</math>. If <math>\angle ABC\cong\angle DEF</math>, then <math>\mbox{m}\angle ABC=\mbox{m}\angle DEF</math>. | ||
− | The measure of an angle can expressed in [[degree]]s or in [[radian]]s. | + | The measure of an angle can expressed in [[Degree (geometry) | degree]]s or in [[radian]]s. |
== Sets == | == Sets == |
Revision as of 21:11, 31 October 2006
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In mathematics, measure can mean the amount of degrees in an angle, the length of a line segment, or a function that assigns a number to subsets of a given set.
Contents
Line Segments
The measure of is indicated by
, without the bar on top. If
, then
.
Angles
The measure of is indicated by
. If
, then
.
The measure of an angle can expressed in degrees or in radians.
Sets
The measure of a set is known as the set's cardinality. If , then the cardinality of set
is
.