Parallel Lines and Planes

4-1

100

What is it called when planes do not intersect?

It's parallel

200

Outside two lines

Exterior 

300

To find the slope of the line containing two points with coordinates (x1, y1) and (x2, y2) you use what formula 

Y²-Y¹

———————

X²-X¹ 

400

If you know two points on a line you will need to ?

Find the slope of the line passing through the points and then write the equation.

4-2

100

When lines are not in the same plane and do not intersect they are?

Skew

200

On opposite sides of the transversal 

Alternate exterior 

300

The slope of a vertical line where x¹= x² is ?

Undefined

400

M=3 Y intercept = -4

???

4-3

100

Lie between the two lines is?

Interior

200

A line that intersects two or more lines in a plane at different points

Transversal 

300

Two lines have the same slope if and only if 

They are parallel or nonvertical

4-4

100

On opposite sides of the transversal 

Alternate interior 

200

If two parallel lines are cut by a transversal then the following angles are?

Congruent 

300

Two non vertical lines are perpendicular if and only if the product of their slope is?

-1

4-5

100

On the same side of the transversal 

Consecutive interior

200

If two parallel lines are cut by a transversal then consecutive interior angles are?

Supplementary 

300

You can write an equation of a line if you are given ?

The slope and the coordinates of a point on the line or the coordinates of two points on the line