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Bell ringer
1. Find the next two numbers
3,-9,27,-81,...
Show the conjucture is false by finding a counter-example
2. x3 >x2 for all real numbers
GEOMETRY
Assignment 1B
16. a2 = 7
17. a13 = 27
1. 32, 64
2. ­5/10, ­6/12
18. a9 = ­4
19. a5 = ­1
3. 250, 125
20.a5 = 12
4. 1/243, 1/729
21. a11 = ­5000
5. 17/10, 21/12
22. a4 = 9
6. C
7. A
8. A
9. D
10. B
23. a2 = 17
11. a7 = 10
26. a4 = 17
12. a3 = 15
27. a2 = 31
13. a6 = 11
14. a1 = ­2
28.a10 = ­3
29.a3 = 30
15. a9 = 6
30.a5 = 14
24. a3 = 34
25. a6 = 11
Notes 1C:
Points Line and Planes
Using undefined terms and Definitions
Define The following:
Definition
Term
Point
Line
Labeled diagram
series of points, straight,
goes on forever in both
directions
Plane
extends infinitely,
drawing of a plane
has an end, but plane
does not end.
Collinear
points that lie
on the same line.
Non-collinear
points that are not
on the same line.
Coplanar
Points that lie in
the same plane.
Non-coplanar
points that do not
lie in the same plane.
Segment
made up of points,
straight,
definite beginning
and end.
Names
Endpoint
a point that ends
or begins a line segment.
Ray
series of points, straight,
one end point, extends
indefinitely in one direction.
Initial point
The end point
of a ray
Opposite rays
extend in opposite
directions from one
initial point.
Angles
two different rays
with same initial point.
Vertex
initial point of
an angle. It Names
the angle
Sides
The two rays that
form the angle
Naming Collinear and Coplanar Points
a. Name 3 points that are collinear.
b. Name four points that are coplanar
c. Name three points that are not collinear
Drawing lines, segments and Rays
Draw three noncollinear points, J,K, and L. Then draw
JK, KL, and LJ
Drawing opposite Rays
Draw two lines. Label points on the lines and name two pairs of
opposite rays
Q
M
x
P
N
Sketching intersections of Lines and Planes
Sketch the figure described.
a. a line that intersects a plane in
one point.
draw a plane and a line.
Emphasize the point where
they meet.
Dashes indicate where the line
is hidden by the plane.
Assignment 1C
Worksheet 1C
Page 13
9-35 odd