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11 <title>Diagonal iversion of elements</title>
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108 <h1>Diagonal inversion of elements</h1>
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111 you can inverse the diagonal (edge) of a pseudo-quadrangle formed by two
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112 neighboring triangles with one common edge.</p>
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116 <p class=TODO>To inverse the diagonal:</p>
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118 <p class=TODO> </p>
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120 <p class="whs1">1. From the <span style="font-weight: bold;"><B>Modification
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121 </B></span>menu choose the <span style="font-weight: bold;"><B>Diagonal inversion
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122 </B></span>item or click <img src="../image70.gif" width="24px" height="22px" border="0" class="img_whs2"> button in the toolbar. The following
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123 dialog box shall appear:</p>
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127 <p class="whs1"><img src="../image69.gif" width="298px" height="150px" border="0" class="img_whs3"></p>
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129 <p class="whs1"> </p>
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131 <p class="whs1">2. Enter the ID of the required edge in the
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132 <span style="font-weight: bold;"><B>Edge </B></span> field
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133 or select this edge in the 3D viewer. </p>
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135 <p class="whs1"> </p>
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137 <p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
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