Is it possible for two acute angles to be supplementary?

1 Answer
Jan 1, 2016

No.

Explanation:

An acute angle means that it is less than #90^o# (#alpha < 90^o#) or #pi/2# in radians,

If two angles are supplementary, it means that their sum is #180^o# (#x+y = 180^o#) or #pi# in radians.

Now, if two angles are acute, i.e., less than #90^o# (#a<90^o# and #b<90^o#), their sum must be less than #180^o#:
#a<90^o#
#b<90^o#
_____# #
#a+b<180^o#