1.2 Points , lines Planes In Geometry there are 3 undefined terms

NO Size NO L,W,H Marks only a location Use a dot Point NO Size NO L,W,H Marks only a location Use a dot

Point- Notation P You represent it with a point and a Capital letter

Goes forever in both directions Line Goes forever in both directions

You name a line with 2 letters and the line symbol on top of it EX. Line Notation You name a line with 2 letters and the line symbol on top of it EX. A B C

Line segment * A line segment has two endpoints Notation: D E

Ray * has only 1 endpoint * Goes forever in one direction Notation: B

Name the following in 2 different ways using the correct symbol and letters. 1. 3. 2.. 4. Z

Plane. Has length and width. It’s flat Plane * Has length and width *It’s flat *It’s represented by a 4 sided figure * You need at least 3 points to make a plane

Plane-Notation *You name a plane with an Italic Capital letter Ex.

Intersections 2 lines intersect in a _____________ 2 planes intersect in a ______________

Opposite Rays A X M

Collinear. Collinear means on the same line Ex. Collinear. Ex Collinear * Collinear means on the same line Ex.Collinear Ex.Non-Collinear

Coplanar * Coplanar means in the same plane Ex.

Homework Pg 13 #3-37 all