1. Basics of Geometry

2. We will be studying planar geometry, which is also known as _________ for its founder.
EUCLIDEAN GEOMETRY

3. These are considered UNDEFINED TERMS, because they are only explained using examples and descriptions. POINTS LINES PLANES
•A •B •A •A •B •C

4. Points on the same line are said to be….
COLLINEAR

5. Points on the same plane are said to be…..
COPLANAR

6. Collinear points are always coplanar.

7. Now let’s try some problems!!
Point M is ___________ points P and Q if and only if P, Q and M are collinear and PM+MQ=PQ.
BETWEEN
GOOD JOB!!! 
Now let’s try some problems!!

8. Two segments having the same measure are…..
CONGRUENT

9. Now try this! Decide whether each purple item is Always True, Sometimes True or Never True. 
Three points are coplanar.
ALWAYS TRUE!!
Four points are coplanar.
SOMETIMES TRUE!!
Coplanar points are collinear.
ALWAYS TRUE!!
Non-coplanar points are collinear.
SOMETIMES TRUE!!
Two points are collinear.
NEVER TRUE!!