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(:title Copy a Line Segment - Directions :) (:div class=s9:) >>&<< [table border=1 cellpadding=3] [row] [ colspan=3]%c12 dkr b%Do the givens. [row] [c]Attach:GgbActivity./segment.jpg []%exa%Draw line segment by clicking twice in drawing pad.%% []%ref%Point A%% %ref%Point B %red%[@a=Segment[A,B]@] [row] [ colspan=3]%pra%'''Label:''' Use right-click to hide/show labels on endpoints and segment.%% >>&<<%up%'''Decorate:''' Right-click on segment, choose properties, color tab: red, style tab: thickness=5.%% Click on Close. [row] [c]Attach:GgbActivity./line.jpg []%exa%Draw line by clicking twice in drawing pad.%% []%ref%Point C %ref%Point D %black%[@b=Line[C,D]@] [row] [ colspan=3]%pra%'''Label:''' Use right-click to rename C -> P and to hide point D.%% [row] [ colspan=3]%c12 dkr b%Copy the segment.%% [row] [c]Attach:GgbActivity./compass.jpg []Draw circle with radius the segment and center P by clicking on points A, B and then P. []%black%[@Circle c=Circle[P, Segment[A, B]@] [row] [c]Attach:GgbActivity./intersect.jpg []Draw point C by clicking on 2nd intersection point of circle and line. []%black%[@C=Intersect[c, b, 2]@]. [row] [c]Attach:GgbActivity./line.jpg []%exa%Draw line segment by clicking on points P and C.%% []%red%[@d=Segment[P,C]@] [row] [ colspan=3]%pra%'''Label:''' Use right-click to hide/show labels on segment.%% >>&<<%up%'''Decorate:''' Right-click on new segment, choose "Segment d", choose "Properties", color tab: red, style tab: thickness=5.%% Don't close. >>&<<%up%Click on "Circle c", style tab: line style=dotted.%% Click on Close. [row] [ colspan=3]%c12 dkr b%Check construction.%% [row] [c]Attach:GgbActivity./move.jpg []Click and drag endpoints of first line segment to change its length. []Copied line segment should match changes. [row] [ colspan = 3](:showhide init=hide div=div1 lshow="+" lhide="-":) See construction protocol (Command: View -> Construction Protocol) (:div1 id=div1 :) >>&<< -> Attach:segment_copy_conpro.jpg >>&<< (:div1end :) >>-<< [row] [ colspan=3]%c12 dkr b%Save construction.%% Command: File -> Save. [tableend] (:divend:) >>&<< [table width=100% border=0] [row] [][[InterA/ConstructSegmentCopy| Attach:main/tri_purple_up_a.gif ]] [[InterA/ConstructSegmentCopy| Up one level]] [c] (:popclose Close Window:) [r](:html:) (:htmlend:) [tableend] %white%geometric, construct, construction, straightedge, compass, ruler, geogebra, application, geometry, program%% (:noleft:)(:noright:)(:noheader:)(:nofooter:)