LINES AND ANGLESChapter 3 Section 1

PARALLEL LINES

Coplanar lines that do not intersect.

The symbol that represents them is:

SKEW LINES

Non coplanar lines that do not intersect but are not parallel.

A

B C

D

EF

G

PARALLEL PLANES

Planes that do not intersect

PAGE 141 IN THE TEXTBOOK

Look at Problem 1

TRANSVERSAL

A line that intersects two are more coplanar lines at distinct points.

ALTERNATE INTERIOR ANGLES

Non adjacent interior angles that lie on opposite sides of the transversal.

Both are on the interior

CONSECUTIVE INTERIOR ANGLES

Interior angles that lie on the same side of the transversal.

Both angles will be on the interior.

Are sometimes called “Same-side Interior Angles”

CORRESPONDING ANGLES

Lie on the same side of the transversal and in corresponding positions.

One is on the interior and one is on the exterior

ALTERNATE EXTERIOR ANGLES

Nonadjacent exterior angles that lie on opposite sides of the transversal.

Both will be on the exterior

Consecutive Interior Angles: D, F; C, E

TURN TO PAGE 143…

Try Problems #1-10 on your own. Raise your hand when you are finished.

ASSIGNMENT:

Group 1: Student Companion WB, Page 58-61 all

Group 2: Page 144, #11-23; #26-42 even

Group 3: Practice and Problem Solving WB, Page 61 and 62 all.