Question 866762
The road is a transversal that intercets the horizontal lines used to measure elevation at points D and E
1) angle FDE = 55 + 11 = 66 degrees, note that 11 degrees is an alternate interior angle
angle DEF = 169 - 42 = 127 degrees, note that 169 degrees is an alternate interior angle
angles given result in sum of triangle angles > 180