PowerPoint Presentation

Document Sample
PowerPoint Presentation Powered By Docstoc
					     Geometry Review:
0011 0010 1010 1101 0001 0100 1011

                                        1
                                            2
                                     4
                 Basic Concepts of Shapes
       While the Egyptians and Babylonians
0011 0010 1010 1101 0001 0100 1011

       demonstrated knowledge about
       geometry, the Greeks created the


                                     1
                                         2
       first formal mathematics of any kind
       by organizing geometry with rules of




                                     4
       logic.
        Geometry is a fundamental part of
        mathematics. The word “geometry”
        comes 0001 0100 1011
0011 0010 1010 1101 from the Greek words geo

        meaning “earth” and metrein
        meaning “to measure.”


                                     1
                                           2
                                  4
          Who Uses Geometry?
0011 0010 1010 1101 0001 0100 1011

  •   Architects
  •   Astronomers
  •
  •                                  1
                                          2
      Designers: Aeronautical, Graphics, etc.
      Surveyors
  •
  •
      Coast Guard
      And many many more!

                                     4
     Basic Properties of Shapes
0011 0010 1010 1101 0001 0100 1011
  • Polygon - an object with many sides.
    Ex. Triangle, Rectangle, Pentagon, etc.
  • All squares are rectangles, but not all
    rectangles are squares.
                                     1
                                         2
  • Triangles are rectangles cut diagonally
    in half.



                                     4
  • The interior angles of a triangle are
    180º.
                           Perimeter
                 x
0011 0010 1010 1101 0001 0100 1011

                                     • The perimeter (P)
         Y              Y
                                       of a polygon is the
               x                       sum of the side

                                                   1
                                                         2
         P = Y +Y + X+X                lengths.
           =2Y + 2X




                                               4
                                     • To the left are
             A         B               some examples.

                 C
        P=A+B+C
                 Area of an Object
0011 0010 1010 1101 0001 0100 1011
   • The area (A) of a                               5
     rectangle is found by               7
     multiplying the length          A = 75 = 35


                                             1
                                                     2
     (l) by the height (h).
         A = l h




                                        4
   • The area of a triangle is                4
     half of a rectangle. We
     use base (b) instead of             5
     length.                          A = 45 = 10
             A= b h                       2
                      2
     Now Let’s Take The Quiz!
0011 0010 1010 1101 0001 0100 1011

                                         1
                                              2
                                      4
               Click here to take the Quiz.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:0
posted:9/16/2012
language:Unknown
pages:8