If two congruent angles form a linear pair, then __________.
A.
one angle is acute and the other angle is obtuse
B.
they are both right angles
C.
they are both acute angles
D.
they are both obtuse angles
A.
one angle is acute and the other angle is obtuse
B.
they are both right angles
C.
they are both acute angles
D.
they are both obtuse angles