Section 1.1

Warm UpGraph each inequality.

1. x ≥ 3

2. 2 ≤ x ≤ 6

3. x < 1 OR x > 0

y

x

Quadrant 1Quadrant 2

Quadrant 3 Quadrant 4

A point on the coordinate plane is called an

Points A, B and C are on the same line. Therefore, they are called

Points A, B, C, D and E are not on the same line. Therefore they are called

Points, Lines and PlanesA dot is called a A point must be written with a capital letter.

Two or more collinear points make up a A line is named by any ____ points on that line

or by the lower case script letter.

Two lines intersect at a

Two or more lines, make up a Points in the same plane are called A plane is

a flat surface that extends indefinitely in all directions.

A plane can be named by a capital script letter or by any _____ non-collinear points on the plane.

Two planes intersect at a line.

1. What is the intersection of plane P and R?

2. Are points F and C coplanar?

3. Are points F, D and G collinear?

4. What do the dotted lines represent?

A. Name four coplanar points.

B. Name three lines.

Draw and label each of the following.

A. a segment with endpoints M and N.

B. opposite rays with a common endpoint T.

C. Draw and label a ray with endpoint M that contains N.

1. Two opposite rays.

3. The intersection of plane N and plane T.

4. A plane containing E, D, and B.

2. A point on BC.

Section Quiz

5. a line intersecting a plane at one point

6. a ray with endpoint P that passes through Q

Draw each of the following.