#2**0 **

The lower left-hand corner angle of the triangle is 85^{o} because it is vertical to an 85^{o} angle.

Since the lines are parallel, the angle supplementary to the lower right-hand corner angle of the

triangle is 98^{o}.

This makes the lower right-hand corner angle of the triangle 180^{o} - 98^{o}^{ } = 82^{o}.

Now, we know two of the three angles of the triangle; all we need to do is find the size of the

third angle. 180^{o} - 85^{o} - 82^{o} = .......

geno3141 Jul 16, 2020