Teacher Notes

1
Teacher Notes

• Mention Skew
• Show all different notations

2
Building Blocks of Geometry

• Points, Lines and Planes
• Oh my ?

3
Figure Named by Represented by Example
Point (position) Capital Letter Dot
Line (no thickness, straight, extends forever) Two Points on the line OR Lower Case Letter Line with two arrowheads
Plane (flat, extends forever) Three Points on the plane OR Script capital letter Quadrilateral
Segment (part of a line, has endpts, specific length) Endpoints Line with two dots
Ray (part of a line, extends infinitely in 1 direction. Endpoint and one other point on the line. Line with one dot and one arrowhead
4
Other Vocabulary

• Collinear points
• Points that lie on the same line
• Coplanar points
• Points that lie on the same plane
• Opposite rays
• Rays that share a point and extend in opposite
  directions

5
Other Vocabulary

•  

6
Other Vocabulary
ACUTE
OBTUSE


STRAIGHT
RIGHT
7
Other Vocabulary

•  

What kind of units would we us to measure the
length of a segment?
 
8
Fill in the Blank!

• The intersection of two lines is a
• The intersection of two planes is a
• Through any two points there is exactly one
• Through any three noncollinear points there is
  exactly one
• If two points are in a plane, then the line
  containing them

• Point

point.
line.
Line
line.
plane.
N
is in the plane.
M
9
Assignment

• Handout ½ sheet
• AND
• Blue Workbook
• Handout
• p.1 1-15 all