# Geometry Notes 1.2/1.3A: Linear Measure, Distance Formula

You need the printed 1.2/1.3A Notes for this lesson.

Review! Try these now while you wait for class to start!

1. Name 3 undefined terms in geometry:

2. Name the intersection of line *s *and plane *C.*

3. Name the intersection of line *s *and plane *E.*

4. Name the intersection of plane *C *and plane *E.
*

5. Line *m* is contained in plane ___.

Stop here and wait for the class.

Today: a

**line segment**is two endpoints, and all of the points between.Now do #6 (together with class) and #7 (on your own) on your printed notes! You don't need to show arithmetic, but you do need to show algebra.

#8 on printed notes, with class.

DISTANCE BETWEEN POINTS

DO # 9, 10, AND 11 WITH THE CLASS, ON YOUR PRINTED NOTES.

## ON A GRID:

Remember, the reason to estimate is so that you notice that an answer is incorrect, so that you can go back and check your work.

Try #29, 12, and 13, and 14a on your own on the printed notes. Let's do 14b together.