Quadrilateral and Rotation Transformation
2019-09-27 06:34
This GeoGebra applet demonstrates the rotation transformation of quadrilaterals. Using polygons, vectors, and the Rotate command, it dynamically displays shape and position changes during rotation. It helps learners intuitively understand the rotation center, angle, and corresponding relationships, making it ideal for teaching plane geometry and geometric transformations.
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<caption val="$%n$"/>
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<output a0="sDM"/>
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<output a0="pECD" a1="sCE" a2="e" a3="c"/>
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$\triangle BDC$ 是顶角 $120^\circ$ 的等腰三角形，
$\angle MDN = 60^\circ$。求 $\triangle AMN$ 的周长。""/>
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<command name="Segment">
<input a0="C" a1="N"/>
<output a0="sCN"/>
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<expression label="text13" exp=""$\textcolor{red}{AM} + \textcolor{#F08}{AN} + \textcolor{#F80}{MN}= " + (LaTeX[sAM]) + "+" + (LaTeX[sAN]) + "+" + (LaTeX[sMN]) + "=" + (LaTeX[sAM + sAN + sMN]) + "$ "" />
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<output a0="aEDN"/>
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