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					     Homework 1c1
    Copy into your Planner


Finish Example Exercises 1-4
   & Mixed Exercises 1 - 4
     # 1-7, 9-11, 21 & 22
   Drill 1c1 #1
   Solve for x:

4 + 2x + 4x = 25
      Drill 1c1 #2
Find the perimeter of the
       pentagon.
 Drill 1c1 #3
Name this figure.


                R
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     Homework 1c1
    Copy into your Planner


Finish Example Exercises 1-4
   & Mixed Exercises 1 - 4
     # 1-7, 9-11, 21 & 22
     Drill 1c1 #1
     Solve for x:
  4 + 2x + 4x = 25
CLT    6x + 4 = 25
S4         6x = 21
D6        x = 3.5
         Drill 1c1 #2
Find the perimeter of the pentagon.




   P = 4.1 + 6.8+ 5.4+ 3.5+ 8.3
             = 28.1 in
 Drill 1c1 #3
Name this figure.


                R
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        RA
 Unit: Tools of Geometry
 Lesson 1c1: Measuring
   Angles & Segments
Objective: The student will
 use geometric tools and
postulates to find measures
 of segments and angles.

   Make sure that you have copied
   the objective on Worksheet 1-4
  Unit: Tools of Geometry Lesson
1c1: Measuring Angles & Segments
  Postulate 1-6: Segment Addition
              Postulate
   If three points A, B, and C are
     collinear and B is between
    A and C, then AB + BC = AC.
     A           B                    C
   Make sure that you have copied this in
    your “notes” book for Section 1-4.
    Ruler Postulate /
Segment Addition Postulate


Find the length of segment AC.
    (AC - the length of AC)
  a. AC= -2 - - 5 = 3
This is like counting steps!
    In Geometry a length is
        never negative!
    Ruler Postulate /
Segment Addition Postulate


 Find the length of segment CY.
     (CY - the length of CY)
   b. CY= 5 - - 2 = 7
This is like counting steps!
   In Geometry a length is
       never negative!
    Ruler Postulate /
Segment Addition Postulate


Find the length of segment AB.
    (AB - the length of AB)
  c. AB= 0 - - 5 = 5
  This is like counting steps!
   In Geometry a length is
       never negative!
    Ruler Postulate /
Segment Addition Postulate


Find the length of segment BY.
    (BY - the length of BY)
  d. BY= 5 - 0 = 5
This is like counting steps!
    In Geometry a length is
    never negative!
    Ruler Postulate /
Segment Addition Postulate


Find the length of segment XA.
    (XA - the length of XA)
  e. XA= 2 - - 5 = 7
 This is like counting steps!
   In Geometry a length is
       never negative!
    Ruler Postulate /
Segment Addition Postulate
Find JK if the coordinate of J is -4
 and of the coordinate of K is 7 .
 (Count the distance from J to K)

h. JK = 7 - - 4 =11
 This is like counting steps!
      In Geometry a length
        is never negative!
    Ruler Postulate /
Segment Addition Postulate
Find ST if the coordinate of S is -1
 and of the coordinate of T is -9 .
 (Count the distance from S to T)
i. JK = -1 - - 9 = 8
  This is like counting steps!
      In Geometry a length
        is never negative!
 Now finish working
problems 5 – 20 & 1-4
Example Exercises 1-4
  Why are you still
     watching
   the screen?
    Ruler Postulate /
Segment Addition Postulate


  Find the length of AC + CY.
(ADD - the lengths of AC & CY)
f. AC + CY= (-2+- 7 = +10 -2)=
             3 -5) (5-
 This is like counting steps!
    In Geometry a length is
        never negative!
    Ruler Postulate /
Segment Addition Postulate


  Find the length of YB + BC.
(ADD - the lengths of YB & BC)
g. YB + BC= 55+ 2 =+ 7 - -2)=
           ( - 0) (0
This is like counting steps!
    In Geometry a length is
        never negative!
       Ruler Postulate /
   Segment Addition Postulate
 Use the diagram below to complete.
     A          B              C
 If AB= 13 and BC=18, then AC= 31
                      = 31
              13 + 18 then BC= ____
If AB= 21 and AC=51,            30
If AB= x+10, BC= – 21 = 30
               51 11 and AC=37, x=___
                                   16
 If AB= 2x+4, + 10+x 21= AC=48, x=__
        CLT BC=x+8 and=37
        S 21 x +11 16 37
           x          =             12
         S 12 + x+ = = 48
          2x3
          D         x 8 36
                    += =
         CLT+ 4 3x 3x12 1248
    Ruler Postulate /
Segment Addition Postulate

 F x -2 G         2x + 3 H
 If FH = 22 find the value of:
       3x+ + 2x +
        x = 21
a. x = 3x -2 1 = 22 =37= 22
b. FG =7 - 2 = 5
         x-2=
c. GH =14 + 3 = 17
         2x + 3 =
  Now finish working
  problems 21 – 29 on
 Example Exercises 1-4
 & problems 1 – 7, 9-11,
       21 & 22 on
  Mixed Exercises 1-4
Why are you still watching
      the screen?
 CLOSER 1c1 # 1, 2 , & 3




1. Find the length of AC.
2. Find the length of CX.
3. Find the length of AC + CX.
       CLOSER 1c1 # 4

Find ST if the coordinate of S is -3
 and of the coordinate of T is -8 .
  CLOSER 1c1 # 5
F 13   G               H
       30
5. If FG= 13 and FH = 30,
        find GH:
CLOSER 1c1 # 6, 7 , & 8

F x-4 G          3x + 2 H

If FH = 30 find the value of:
  6. x
 7. Find the length of FG.
8. Find the length of GH.
   Pass in your closer
       answers.
Pack up and be ready to leave
   when the tone sounds.

  DO NOT LEAVE YOUR
    SEAT UNTIL THE
        TONE!

				
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posted:10/23/2012
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