Answer:
a) a = g
b) d + g = 180
c) f + e = 180
Explanation:
See attached worksheet.
a) a = g Angles opposite two intersect straight lines are equal.
b) d + g = 180 Assuming lines x and y are parallel, the respective angles will be the same between the two intersecting points. Therefore, e = g. Since d + e = 180, we can say that d + g = 180.
c) f + e = 180 Angles on either side of the intersecting line sum to a total of 180.