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I am assuming 72

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  =  .......