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Mathematics 17 Online
OpenStudy (anonymous):

Adjacent angles are always supplementary. True False

OpenStudy (e.cociuba):

false they have to be complementary, if they share the same vertex:)

Directrix (directrix):

@e.cociuba Adjacent angles do not have to be complementary. They must: 1) lie in same plane 2) have a common vertex 3) have a common side and 4) have no common interior points

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