<p>- &Sigma;&epsilon; &pi;&rho;ώ&tau;&omicron; &epsilon;&pi;ί&pi;&epsilon;&delta;&omicron; &sigma;&epsilon; έ&nu;&alpha; &alpha;&rho;&chi;&epsilon;ί&omicron; Geogebra &theta;&epsilon;&omega;&rho;&omicron;ύ&mu;&epsilon; έ&nu;&alpha; &sigma;&eta;&mu;&epsilon;ί&omicron; &Mu; &sigma;&tau;&omicron; &pi;&rho;ώ&tau;&omicron; &tau;&epsilon;&tau;&alpha;&rho;&tau;&eta;&mu;ό&rho;&iota;&omicron;. &Phi;έ&rho;&nu;&omicron;&nu;&tau;&alpha;&sigmaf; &tau;&eta;&nu; &pi;&rho;&omicron;&beta;&omicron;&lambda;ή &Alpha;&nbsp; &tau;&omicron;&upsilon; &sigma;&eta;&mu;&epsilon;ί&omicron;&upsilon; &Mu; &sigma;&tau;&omicron;&nu; ά&xi;&omicron;&nu;&alpha; xx΄ &epsilon;&pi;&alpha;&lambda;&eta;&theta;&epsilon;ύ&omicron;&upsilon;&mu;&epsilon; &tau;&omicron;&upsilon;&sigmaf; &tau;&rho;&iota;&gamma;&omega;&nu;&omicron;&mu;&epsilon;&tau;&rho;&iota;&kappa;&omicron;ύ&sigmaf; &alpha;&rho;&iota;&theta;&mu;&omicron;ύ&sigmaf; &tau;&eta;&sigmaf; &gamma;&omega;&nu;ί&alpha;&sigmaf; &omega;= &Chi;&Omicron;&Mu; &alpha;&pi;ό &tau;&omicron; &omicron;&rho;&theta;&omicron;&gamma;ώ&nu;&iota;&omicron; &tau;&rho;ί&gamma;&omega;&nu;&omicron; &Omicron;&Mu;&Alpha;</p> <p>- &sigma;&tau;&eta; &sigma;&upsilon;&nu;έ&chi;&epsilon;&iota;&alpha; &epsilon;&pi;&iota;&lambda;έ&gamma;&omicron;&nu;&tau;&alpha;&sigmaf; έ&nu;&alpha; &sigma;&eta;&mu;&epsilon;ί&omicron; &sigma;&tau;&omicron; &delta;&epsilon;ύ&tau;&epsilon;&rho;&omicron; &tau;&epsilon;&tau;&alpha;&rho;&tau;&eta;&mu;ό&rho;&iota;&omicron; &epsilon;&pi;&alpha;&lambda;&eta;&theta;&epsilon;ύ&omicron;&upsilon;&mu;&epsilon; &kappa;&alpha;&iota; &gamma;&epsilon;&nu;&iota;&kappa;&epsilon;ύ&omicron;&upsilon;&mu;&epsilon; &tau;&omicron;&upsilon;&sigmaf; &nu;έ&omicron;&upsilon;&sigmaf; &tau;ύ&pi;&omicron;&upsilon;&sigmaf; &gamma;&iota;&alpha; &omicron;&pi;&omicron;&iota;&alpha;&delta;ή&pi;&omicron;&tau;&epsilon; &gamma;&omega;&nu;ί&alpha;.</p> <p>- &Sigma;&epsilon; έ&nu;&alpha; &delta;&epsilon;ύ&tau;&epsilon;&rho;&omicron; &epsilon;&pi;ί&pi;&epsilon;&delta;&omicron; &alpha;&nu;&alpha;&zeta;&eta;&tau;&omicron;ύ&mu;&epsilon; &tau;&eta; &sigma;&chi;έ&sigma;&eta; &pi;&omicron;&upsilon; έ&chi;&omicron;&upsilon;&nu; &omicron;&iota; &tau;&rho;&iota;&gamma;&omega;&nu;&omicron;&mu;&epsilon;&tau;&rho;&iota;&kappa;&omicron;ί &alpha;&rho;&iota;&theta;&mu;&omicron;ί &tau;&omega;&nu; &pi;&alpha;&rho;&alpha;&pi;&lambda;&eta;&rho;&omega;&mu;&alpha;&tau;&iota;&kappa;ώ&nu; &kappa;&alpha;&iota; &sigma;&upsilon;&mu;&pi;&lambda;&eta;&rho;&omega;&mu;&alpha;&tau;&iota;&kappa;ώ&nu; &gamma;&omega;&nu;&iota;ώ&nu;</p> <p>&nbsp;- &Tau;έ&lambda;&omicron;&sigmaf; &upsilon;&pi;&omicron;&lambda;&omicron;&gamma;ί&zeta;&omicron;&upsilon;&mu;&epsilon; &tau;&omicron;&upsilon;&sigmaf; &tau;&rho;&iota;&gamma;&omega;&nu;&omicron;&mu;&epsilon;&tau;&rho;&iota;&kappa;&omicron;ύ&sigmaf; &alpha;&rho;&iota;&theta;&mu;&omicron;ύ&sigmaf; &sigma;&upsilon;&gamma;&kappa;&epsilon;&kappa;&rho;&iota;&mu;έ&nu;&eta;&sigmaf; &gamma;&omega;&nu;ί&alpha;&sigmaf; 90&lt;&omega;&lt; 180. &pi;.&chi; 135 &mu;&omicron;&iota;&rho;ώ&nu;.</p>