Notes: 3.1

3.1 lines and Angles
parallel lines are coplanar and do not intersect
skew lines do not intersect and are not coplanar
parallel planes do not intersect
Postulate 13- Parallel Post. : If there is a line and a point not on the line, then there is exactly one line through the point that is parallel to the given line
Postulate 14- Perpendicular Postulate: If there is a line and a point not on the line, then there is exactly one line through the point that is perpendicular to the given line

*construction*- making a perpendicular to a line (pg 130)
-have them do the other constructions we know, bisecting a line/making a perpendicular, copying a line, bisecting an angle

transversal- line that intersects 2 or more coplanar lines
The angles a transversal creates have special names:
Corresponding angles: occupy corresponding positions
Alternate Exterior: lie outside the 2 lines on opposite sides
Alternate Interior: ;lie between the 2 lines on opposite sides
Consecutive Interior: between the 2 lines and on the same side (aka same side interior)

Dashed angle organizer
Ws: practice 3-1