Wouldn't think so, think of a trapezium shaped like a square with a triangle on one side... The angles at one end of the figure are both 90o, and the angles at the other end will be supplementary, but not opposite angles.
no * * * * * But they can be.
No. Opposite angles are equal. Adjacent angles are supplementary.
Yes.
Not necessarily. A linear pair of angles must be supplementary but supplementary angles need not form a linear pair. For example, the opposite angles of a cyclic quadrilateral are supplementary but they are (by definition) not next to one another.
True
No. The adjacent angles are supplementary.
opposite angles are supplementary
false
false
Wouldn't think so, think of a trapezium shaped like a square with a triangle on one side... The angles at one end of the figure are both 90o, and the angles at the other end will be supplementary, but not opposite angles.
No, they are equal. Adjacent angles are supplementary in a prallelogram.
No, they are generally not supplementary.
Yes, adjacent angles are supplementary; however, opposite angles are not.
no * * * * * But they can be.
Yes. This is true because opposite angles are congruent and adjacent angles are supplementary.
No. Opposite angles are equal. Adjacent angles are supplementary.