Question 802322
Adjacent angles are supplementary or complementary.: {{{not}}} {{{true}}}

reason: Definition and properties of adjacent angles - those that share a common leg or ray. (means the sum of both doesn't have to be exactly {{{90}}} or {{{180}}} degrees )


 Linear pairs are adjacent and supplementary.: {{{TRUE}}}

reason: Definition and properties of a linear pair of angles - two angles that are {{{adjacent}}} and {{{supplementary}}}.

       Vertical angles are equal and supplementary.: {{{not}}} always {{{true}}}, only if two lines that cross are perpendicular to each other

reason: Vertical angles are the angles opposite each other when two lines cross and share the same Vertex (corner point), not the usual meaning of up-down. 

       Adjacent angles are linear pairs or are complementary.{{{not}}} {{{true}}}

reason: Two angles are Adjacent if they have a common side and a common vertex (corner point) and don't overlap. 
so, by definition, they cannot be linear and they could but don't have to be complementary