Parallel Skew and Perpendicular Lines

EH

DC

AE

FB

DE

BC

KF

DK

Parallel

Perpendicular

Intersecting

Intersecting

Perpendicular

Parallel

28^o

136^o

44^o

6^o

y = 20

y = 120

y = 60

y = 10

$$\overleftarrow{E}\overrightarrow{H}$$

$$\overleftarrow{F}\overrightarrow{B}$$

$$\overleftarrow{D}\overrightarrow{C}$$

$$\overleftarrow{A}\overrightarrow{D}$$

$$\overleftarrow{E}\overrightarrow{H}$$

$$\overleftarrow{A}\overrightarrow{B}$$

$$\overleftarrow{D}\overrightarrow{C}$$

$$\overleftarrow{H}\overrightarrow{G}$$

$$\overleftarrow{E}\overrightarrow{H}$$

$$\overleftarrow{A}\overrightarrow{B}$$

$$\overleftarrow{C}\overrightarrow{G}$$

$$\overleftarrow{H}\overrightarrow{G}$$

$$\overleftarrow{E}\overrightarrow{H}$$

$$\overleftarrow{A}\overrightarrow{B}$$

$$\overleftarrow{C}\overrightarrow{G}$$

$$\overleftarrow{F}\overrightarrow{G}$$