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hp x 5,*CITE,dl*CODEKh<6X9`(Courier NewKS2\  `&Times New RomanS42Emphasis64Hyperlink    <:FollowedHype    4go2Keyboard Kh<6X9`(Courier NewKS2\  `&Times New RomanS <:Preformatted  /%  ,Kk %#/Kh<6X9`(Courier NewKS2\  `&Times New RomanS/%  ,Kk %#/  <:zBottom of 7z(X7    5+ ` hp x 5?l%2A`Arial?  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GeometersSketchpad, byKeyCurriculumPress. 3 :  Ӏ lXlXkPoints,segments,rays,andlines    #lXkXl##XXXlXkM#lXkXXX Objective#XXXlXkf# 'XX/  '  N  #/X X /ѵ##XX X/X#lXkXXXInthisactivityyouwillexperimentwithdrawing,dragging,measuring,andlabeling   points,segments,rays,andlinesinGeometrySketchpad.   #XXXlXkQ#lXkXXX#XXXlXkK# lXkXXXԀIGOS:Studentswillbeableto:lXlXk >  # 'l##XX '#x ?+ ` hp x X?  xL  %  %X9 XXXG.1#XX XX9# X9 XXXԀ#XX XX99#X9 XXXrepresentpoints,lines,andplanespictoriallywithproperidentification,aswell   asbasicconceptsderivedfromtheseundefinedterms,suchassegments,rays,and q angles#XX XX9|#2XXXXxL݌ Y Ќ XX   %  #XXX2X#%  %  %Z X9 XXXG.23#XX XX9x # X9 XXXԀ#XX XX9 #X9 XXXuseappropriatesoftwaretopracticeandmasterGeometryinstructional  objectives#XX XX9 #2XXXX  %  #XXX2X #%  X9 XXX#XX XX9$ #lXkXXXProcedures#XXXlXkg #X9 XXX  #XX XX9 # S wOYlXkXXXlXlXk   <( 4 <DLX<ll/ l     s   #/X X /S ##XX X/X4 # lXkXXXPoints s /    Ԍ  ЌlXlXkll   XX   lXkXl #XXXlXk #   +XX2 + +!  <( 4 <DLX< 2 '2 +/ 2 '    #/X X /##XX X/X#!    'XX/  '!   Ԍ̌/՘ /2 +/՘    XX   #2XX2 +1##XXX2XP# \]^_`abcd(03m/ /lXkXXX"\"  X9%4 4 <DLX9  \52  1  .3      #XXXlXk#lXkXXXHighlightthe Pointtool andclickinthesketchwindowtoconstructapoint.  Constructasecondpointbyclickingagain.Thelastpointishighlighted  becauseitisselected.\5݌   Ќ X X44X   #XXXlXkX# ,<( 4 <DLX</X XXX#XX X/XZ#2XXXX"\"  X,<%4 4 <DL4X<  \2  2  .3      #XXX2X#lXkXXXUnselecteverythingbyhighlightingthe#XXXlXk# lXkXXXSelectionArrow #XXXlXkO#lXkXXXԀtoolandclickinablank Z" areainthesketchwindow.\e݌ N# Ќ ,X! 4X44X!   #XXXlXk#?( 4 <DL4X?/X XXX#XX X/X #2XXXX"\"  X,<%4 4 <DL4X<  \k2  3  .3      #XXX2XL#lXkXXXTolabelthepoints,highlightthe#XXXlXk# lXkXXXText #XXXlXk#lXkXXXԀ#XXXlXkB# lXkXXXtool #XXXlXk#lXkXXX.Positionthetexttoolsfingerovera %n  point.Thetexttoolshandwillbecomedarkclosetothepoint.Clicktodisplay &b! thatpointslabel.Repeattolabeltheremainingpoint.\k݌ &N"  Ќ ,X! 4X44X!   #XXXlXk#?( 4 <DL4X?/X XXX#XX X/X#2XXXX"\"  X,<%4 4 <DL4X<  \92  4  .3      #XXX2X#lXkXXXWiththe#XXXlXk_# lXkXXXSelectionArrow #XXXlXk#lXkXXXԀtool,clickononepoint,pressandholddownthe#XXXlXk # lXkXXXShift ($" key #XXXlXky #lXkXXXԀonyourkeyboard,thenclickontheotherpoint.Now,bothpointsshouldbe )%# selected.\9݌ *&$ Ќ ,X! 4X44X!   #XXXlXk #?( 4 <DL4X?/X XXX#XX X/Xa"#2XXXX"\"  X,<%4 4 <DL4X<  \"2  5  .3      #XXX2X"#lXkXXXPositionthecursoroveroneoftheselectedpoints.Pressthemousekeyand ,'& dragthepointacrossthesketchwindow.\"l#݌ v-(' wOY w w  ь ,X! 4X44X!   #XXXlXk## ,?( 4 <DL4X?  /X XXX  #XX X/X%# e-.0134567(00\]^_`abcd/ /lXkXXX 򀀀 #XXXlXk&#lXkXXXDescribewhathappens.#XXXlXkB'# d ______________________________________________________________________________ D  ______________________________________________________________________________ 0  ______________________________________________________________________________  l ______________________________________________________________________________  X ______________________________________________________________________________  D  <( 4 <DLX<  /X XXX#XX X/X)#  Ӏ6. Measuremenu ,choose Distance .    ,<( 4 <DLX</X XXX#XX X/X*# \]^_`abcd(00e-.01345677.Clickinablankareaofthesketchwindowtounselectthepoints.Positionthecursor   aboveoneofthetwopoints,pressonthemouseanddragthechosenpoint.Observethe p  measurement. \  ,?( 4 <DL4X? lXkXXXԀ #XXXlXk,#/X XXX   H #XX X/X+-#    lXkXXX  򀀀 #XXXlXk-#lXkXXXDescribewhathappens.#XXXlXk.# (x  ______________________________________________________________________________ l ______________________________________________________________________________ X ______________________________________________________________________________ D ______________________________________________________________________________ 0 ______________________________________________________________________________   X9%4 4 <DLX9lXkXXXHowcanyoumakethedistancebetweenthetwopointszero?  #XXXlXk0#<( 4 <DL44X< XlXkXXX_____________________________________________________________________  _____________________________________________________________________ | _____________________________________________________________________ h _____________________________________________________________________ T  _____________________________________________________________________ @! #XXXlXk1#lXkXXX Linesegments  $T" ̀1.DrawalinesegmentconnectingpointsAandBby: %4!$ #XXXlXk3#lXkXXXԀPlacingthecursoroverpointAandpressdownonthemousebutton.Movethe & "% ЀcursortopointBandrelease. ' #& #XXXlXkX4#<( 4 <DLX</X XXX#XX X/X5#2XXXXԀ2.#XXX2X5#lXkXXXHighlightthe#XXXlXk6# lXkXXXSegmenttool #XXXlXkd6#lXkXXXԀanddrawasegmentconnectingthetwopoints.Two )$( Ѐsmallblacksquaresonthesegmentindicatethatitisselected. *%) #XXXlXk6# ,<( 4 <DLX</X XXX3.#XX X/X7#lXkXXXWhilethesegmentisselected,gotothe#XXXlXk/8# lXkXXXMeasuremenu #XXXlXk8#lXkXXXԀandchoose#XXXlXk8# lXkXXXLength #XXXlXk?9#lXkXXX. P,'+ #XXXlXk9# ,?( 4 <DL4X?/X XXX H-(, W e   #XX X/X/:#2XXXXԀ#XXX2X:#lXkXXX4.Usethe#XXXlXk;# lXkXXXSelectionArrowtool #XXXlXkc;#lXkXXXԀtodrageitherendpointofthesegment.  #XXXlXk;#<( 4 <DLX<K{(XK/X XXX#XX X/X<#lXkXXX  򀀀 #XXXlXk=#lXkXXXDescribewhathappensasyoudragoneoftheendpoints. X _____________________________________________________________________ L  _____________________________________________________________________ 8  _____________________________________________________________________ $ t _____________________________________________________________________  ` _______________________________________________________________________  L    #XXXlXkg=#lXkXXX  #XXXlXk?# ,<( 4 <DLX</X XXX#XX X/Xe@# 89:;<=>?@(00\]^_`abcdlXkXXX5.#XXXlXk)A#lXkXXXUsethe Segmenttool toconstructasecondsegmentwithoneendpoint   attachedtothefirstsegment.Todothis,pressthemousebuttoninablankareaof   thesketchwindowanddraguntilthe_crosshairs_Ԁaredirectlyoverthefirstsegment.   #XXXlXkoA#?( 4 <DL4X?/X XXX#XX X/XBC#lXkXXX6.Showthelabelsofthenewendpointsbyusingthetexttool.#XXXlXkC#lXkXXX h #XXXlXkD#?( 4 <DL4X?/X XXX#XX X/XD#?( 4 <DL4X?K{(X8K/X XXX#XX X/XjE#lXkXXX  #XXXlXkE#lXkXXXDrawthefigurebelow. l   #XXXlXkE#lXkXXX(#(#K(##XXXlXkF#/X XXXԈ#XX X/XF#2XXXX7.T#XXX2XG#lXkXXXoconfirmthatpointDisattachedtoABu#XXXlXkcG#lXkXXXsethe#XXXlXkG# lXkXXXSelectionArrowtool #XXXlXkH#lXkXXXԀtodrag @  pointD. 4! #XXXlXktH#<( 4 <DLX</X XXX #XX X/X,I#2XXXX 8.#XXX2XrI#lXkXXXSelectsegmentCD.Twosmallblacksquareswillappearonthesegmentto #T! showthatthesegmentisselected.Pressonthe#XXXlXkI# lXkXXXConstructmenu #XXXlXkJ#lXkXXXԀandchoose #D" #XXXlXkJ# lXkXXXPointatmidpoint #XXXlXkGK#lXkXXX. $8 # #XXXlXkK#?( 4 <DL4X?/X XXX#XX X/X4L#2XXXX9.#XXX2XwL#lXkXXXClickablankareainthesketchwindow#XXXlXkL#lXkXXXԀtounselecteverything. &"% 10.Highlightthe SelectionArrow .PressanddragpointD. (#' #XXXlXk&M# ,?( 4 <DL4X?/X XXX#XX X/X:N#<( 4 <DLX</X XXX#XX X/XN#  ?( 4 <DL4X?K{(XX+&K_/X XXX  X+&* #XX X/XO#  lXkXXX 򀀀 #XXXlXkP#lXkXXXDescribethepaththatthemidpointtracesaspointDisdraggedbackandforth.#XXXlXk[P#lXkXXX  #XXXlXkP#lXkXXX_____________________________________________________________________  _____________________________________________________________________ t _____________________________________________________________________ ` _____________________________________________________________________ L  (#(#K(##XXXlXkJQ#/X XXXԈ #XX X/XS#uXkXXXԀ 11. Tosave:Usethepulldown FileMenu .Select SaveAs. Agrayboxappears.  P ЀTypeinthefilenameINTRO1.Clickonthegreen OK checkmark.  D  #XXXuXkNS#lXkXXX  #XXXlXk|T#Kz(X KlXkXXX#XXXlXkU#K{(X 5K/X XXX    #XX X/XU#2XXXX&  !  <( 4 <DLX< 2 'X2X/ 2 '    /X X /#XX X/XV#!,V  lXkXXXRaysandLines!,V-W VԌ y ЌlXkXXlXk2XXXlXk    XX   #XXX2XLW#/X XXX'y V#XX X/XaX# \]^_`abcd(0089:;<=>?@lXkXXXԀ1.#XXXlXk8Y#lXkXXXԀInthe Filemenu ,choose NewSketch . 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