Tuesday, January 17 th
-
Upload
burton-brennan -
Category
Documents
-
view
13 -
download
1
description
Transcript of Tuesday, January 17 th
Tuesday, January 17th • Please complete the warm up and
write down your homework
Warm Up1. Solve .05x=15.5
2. Write as a decimal: .02%
Corny Joke of the Day
How do you get straight A’s?
By using a ruler!
Tests
Great job!
File in your math Folder during
worktime
Weekly Review Answers Practice the ones you get wrong!
+ and – fractions
20/213 5/126 9/208 3/14
Multiplying and dividing Fractions
10 ½ 4 ½ 8/33 5 1/35
Solving with decimals
18.5
101.6
4.5
53.75
Solving with fractions
21/50
5 5/21
38/45
21/44
Ratios and Proportions
10.5 3 13:25 45 3 cups
Decimal/Fraction/Percent
97% and 97/100.8 and 80% $15 $12.72
Unit 2 Preview
Vocabulary Hunt Using your syllabus for Qtr. 3 to
help you find the book pages. Find the definition of the following
vocabulary! Point Line Plane Angle Acute angle Obtuse angles Vertical angles Adjacent angles
Be sure to give an example for each!
Angles &
Symmetry
Learn to describe figures by using the terms of geometry.
OUR MISSION
The building blocks of geometry are points, lines, and planes.
A plane is a flat surface that plane LMN, extends without end in all plane MLN, directions. plane NLM
A plane is named by three points on the plane that are not on the same line.
M
N
L
A point is an exact location. P point P, P
A point is named by a capital letter. A line is a straight path that line AB, AB, extends without end in A B line BA, BA opposite directions.
A line is named by two points on the line.
Example #1
Use the diagram to name the geometric figure.
A. three pointsM, N, and Ppoints are labeled: points M, N, P, Q, and R.
B. two lines
PR and NR
You can also write RP and RN.
Q
N
P
R M
Continued
Use the diagram to name the geometric figure.
C. a point shared by two linespoint R
D. a plane
plane QRMUse any three points in the plane that are not on the same line. Write the three points in any order.
Point R is a point on PR and NR.
Q
N
P
R M
You Try!
Use the diagram to name the geometric figure.
A. three pointsS, T, and UFive points are labeled: points S, T, U, V, and W.
B. two lines
UW and SW
You can also write WU and WS.
V
S
U W
T
You Try!
Use the diagram to name the geometric figure.
C. a point shared by two linespoint W
D. a plane
plane VUTUse any three points in the plane that are not on the same line. Write the three points in any order.
Point W is a point on WS and WU.
V
S
U W
T
A line segment is line segment XY, XY, made of two endpoints Y line segment YX, YX and all the points between X the endpoints.
A line segment is named by its endpoints.
A ray has one endpoint. ray JK, JK From the endpoint, the ray J K extends without end in one direction only.
A ray is named by its endpoint first followed by another point on the ray.
Line vs. Ray
Identifying Line Segments Use the diagram to give a possible name to the figure.
A. three different line segments
B. three ways to name the line
You can also write BA, CB, and CA.
AB, BC, and ACYou can also write BA, CB, and CA.
AB, BC, and AC C
A B
Identifying RaysUse the diagram to give a possible name to the figure.
A. six rays
B. another name for ray AB
A is still the endpoint. C is another point on the ray.
AB, AC, BC, CB,
CA, and BA
AC
C
A B
You Try #1!
Use the diagram to give a possible name to the figure.
A. three different line segments
B. three ways to name the line
You can also write ED, FE, and FD.
DE, EF, and DFYou can also write ED, FE, and FD.
DE, EF, and DFF
DE
You Try #2 Use the diagram to give a possible name to the figure.
C. six rays
D. another name for ray DE
D is still the endpoint. F is another point on the ray.
DE, EF, DF, FE,
FD, and ED
DF
F
DE
Homework
Workbook8-1