Last Updated
：2025/12/03
opposite angle
（ plural ）
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(geometry) Either of the angles directly opposite to each other when two lines intersect in a plane.
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opposite angle
When two lines intersect, an opposite angle has the same measure as the angle directly across from it, so knowing one lets you determine the other.
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When two lines intersect, an opposite angle has the same measure as the angle directly across from it, so knowing one lets you determine the other.
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