Answer:
A:
the third angle in the triangle is 60 by triangle angle sum theorem
a=45 because they are alternate interior angle and alternate interior angles have to be equal
b=75 because they are a linear trio
B:
on question b I can't see the alphabet so I'm just going to say topmost angle middle angle and bottom angle
top angle=30 because Alternate interiors have to be equal
middle angle= 270 because 360-90=270
bottom angle= 60 because Alternate interiors have to be equal
