GeoBasics2.2 Part 2 Proof Answer
The Proofs from GeoBasics2.2 Part 2
DAC AHN Corresponding Angles
CAN ANH Alternate Interior Angles
HAN HAN Identical Angles
DAC + CAN + HAN = 180°
AHN + ANH + HAN = 180°
or
CAN ANH Alternate Interior Angles
HAN HAN Identical Angles
HAF AHN Alternate Interior Angles
CAN + HAN + HAF = 180°
ANH + HAN + AHN = 180°