CK12 - Geometry

The imageof the originaltriangleis shownas the dashedtrianglebelow. The verticesare

and.

Vertices of left hand triangle are and vertices of the othertriangle are

and

Reflectionsin Two Lines

The TechnologyNotebelowgivesa previewof how to reflectin two lines.

TechnologyNote- Geometer'sSketchpad

The followinganimationsshowa reflectionin two parallellines,and a reflectionin two intersectinglines,

in a step-by-stepview.Note:Geometer’s Sketchpadsoftwareis requiredto view thesefiles.

At http://tttc.org/find/wpShow.cgi?wpID=1096,scrolldownto Downloads.Find:

• http://tttc.org/find/wpFile.cgi?id=17534

CompositeReflectionParallelLines

• http://tttc.org/find/wpFile.cgi?id=17532

CompositeReflectionIntersectingLines

Example 3

The star is reflectedin the -axis.The imageof the reflectionin the -axisisStar'.

Thenthe imageis reflectedin the line The imageof the reflectionof Star' in the line isStar".