Parallel lines and transversals

They never intersect.

They are in the same plane.

The distance between p and q can change as they extend towards infinity.

p $$\parallel$$ q

a $$\parallel$$ b

b $$\perp$$ c

b $$\perp$$ a

b $$\parallel$$ c

1 and 2

2 and 3

5 and 6

3 snd 4

2 and 4

2 and 7

1 and 4

3 and 8

3 and 4

"A" shows supplementary angles.

"A" shows complementary angles.

C and D show supplementary angles

B shows adjacent and complementary angles

a and e

c and g

f and a

a and h

c and e are alternate exterior

f and d are alternate interior.

a and g are alternate exterior.

b and e are alternate exterior

c and f are same-side interior angles

d and f are same -side interior angles.

a and h are same -side exterior angles.

c and g are same -side exterior angles.

If $$m\ \parallel\ p$$ then $$t\ \perp\ p$$

if e = $$90\degree$$ then $$m\ \parallel\ p$$

If $$m\ \parallel\ p$$ then $$t\ \parallel\ p$$

If $$t\ \perp\ p$$ then $$m\ \parallel\ p$$