Homework

					     Homework 3C1
• Read section 3-6.
• Define: Tessellation.
• Copy the Yellow box on
  page 161 into your “Notes”
  book.
• Finish: Worksheet 3-5
   Drill 3C1
1. Solve for x

 X+2 = 7
 10    7
           Drill 3C1
 2. Copy rectangle RECT and
 point P. Rotate the rectangle
90° counterclockwise about P.
     Homework 3C1
• Read section 3-6.
• Define: Tessellation.
• Copy the Yellow box on
  page 161 into your “Notes”
  book.
• Finish: Worksheet 3-5
   Drill 3C1  X+2 = 7
1. Solve for x 10 7
      7(X+2) = 7(10)
       7X+14 =70
     S14   7X = 56
    D7           X=8
            Drill 3C1
  2. Copy rectangle RECT and
point P. Rotate the rectangle 90°
   counterclockwise about P.
      C’




                     T’
              P
      E’




                     R’
   Symmetry
Objective: The student
will find and locate the
 line of and point of
symmetry of images.
   Vocabulary: Symmetry
Symmetry - a figure has a point or .
line about which it maps onto itself.
   Types of Symmetry – Rotational
      Symmetry & Line Symmetry
Rotational Symmetry – a figure
     rotates 1800 or less about a fixed
point to map onto itself.
Line Symmetry- a figure reflects
     over a line to map onto itself.
    Example of Symmetry
A’B’C’D’ is the reflected image of
ABCD over the line l .
                    D’        C’
 This is the A                     B
 line of   l
 reflection.   A’                  B’
                 D         C
 Notice that the      A’B’C’D’ is
             ABCD is the
 orientation has     the copy or
    reversed  original or
              preimage. image.
       Example of Symmetry
H’G’K’L’ is the image of HGKL rotated
                     at 1800 about P.
   KH’        J
              G’
                   GKJH is the original
                      or preimage.
          P
                      Notice that the
   G J’       H
              K’      orientation has
                       not reversed
 G’K’J’H’ is the      P is the point
 copy or image.        of rotation.
Please work all
  problems on
worksheet 3-5 of
  your packet.
       Closing Problems
1. Which figure has both line and
      rotational symmetry?

 F.                        G.



  J.                       H.
    Closing Problems
2. How many lines of symmetry
   does the figure below have?
 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:4/6/2013
language:Unknown
pages:14