Transcript GT Geometry lesson a1.1

Mr. Calise
Geometry Room 306
Unit A Section 1
Drill: Mon 8/27
Look at the picture at right.
List as many geometric
terms as you can that are
represented in the photo.

Objective: Identify, name, draw, and apply
basic facts of points, lines, segments, rays,
and planes.
What is Geometry?
Brain Pop Video
A bit that’s new, a bit of review…
 Vocabulary
1) Line
3) Coplaner
5) Parallel Lines
7) Segment
9) Ray
11) Plane
2) Collinear
4) Skew Lines
6) Parallel Planes
8) Point
10) Line
12) Perpendicular Lines
RA
Notes(Vocab)
Points: have no size, often
represented with dots, and
named with a capital letter.
C
A
B
Lines: have no thickness,
and extend infinitely in two
directions. Named with two
points, or a cursive letter.
l
X
Y
Collinear:
points that are
lying in the same line.
A
B
C
Non-Collinear:
the same line.
A
B
Not lying in
C
Planes: Extend infinitely in all
directions. It is flat and has no
thickness. There are two ways
to name a plane.
To Name a plane you need 3
non-collinear points.
Coplanar: Points and lines that
are in the same Plane.
Segments: Are parts of lines,
they have two endpoints,
and are named by using the
two endpoints.
is a “half-line”. It has
one endpoint and extends
infinitely in one direction.
Rays:
Opposite
Rays: share the
same endpoint and go in
opposite directions.
Parallel Lines: are lines that
are in the same plane and
do not intersect.
(Same Direction)
Parallel
Planes: Two
planes that never intersect.
Skew Lines: Lines that are
in different planes.
(Different Directions and do
not intersect)
A
C
B
D
E
F
I
H
G