Yes, they are.
All supplementary angles would be linear pairs IF they were adjacent. But they could be far apart.
supplementary can sure be a linear pair. As long as their is 2 different angles and they equal 180 degrees.
No. All linear pair angles are supplementary, but supplementary angles do not have to be a linear pair.
Yes. Two angles are suplementary if their sum is 180 degrees. All interior angles in a rectangle are 90 degrees, so any pair of these angles is supplementary.
All supplementary angles do not form a linear pair. The opposite angles of any quadrilateral inscribed in a circle (a cyclic quadrilateral) are supplementary but they are not a linear pair. However, all linear pair are supplementary.
Because "supplementary" means they sum to 180 degrees!
There will be two pairs. It is possible for all four angles to be identical.
Yes.
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A Hexagon has 3 pairs of parallel line and all angles are obtuse.
no
yes