<p>-To &sigma;&epsilon;&nu;ά&rho;&iota;&omicron; &alpha;&phi;&omicron;&rho;ά &sigma;&tau;&omicron;&nu; &upsilon;&pi;&omicron;&lambda;&omicron;&gamma;&iota;&sigma;&mu;ό &tau;&omicron;&upsilon; ύ&psi;&omicron;&upsilon;&sigmaf; &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&epsilon;ί&omicron;&upsilon; &mu;&alpha;&sigmaf; &mu;&epsilon; &chi;&rho;ή&sigma;&eta; &tau;&eta;&sigmaf; &epsilon;&phi;&alpha;&pi;&tau;&omicron;&mu;έ&nu;&eta;&sigmaf; &omicron;&xi;&epsilon;ί&alpha;&sigmaf; &gamma;&omega;&nu;ί&alpha;&sigmaf;. &Omicron;&iota; &mu;&alpha;&theta;&eta;&tau;έ&sigmaf; έ&rho;&chi;&omicron;&nu;&tau;&alpha;&iota; &sigma;&epsilon; &epsilon;&pi;&alpha;&phi;ή &mu;&epsilon; &iota;&sigma;&tau;&omicron;&rho;&iota;&kappa;ά &sigma;&tau;&omicron;&iota;&chi;&epsilon;ί&alpha; &alpha;&nu;&alpha;&phi;&omicron;&rho;&iota;&kappa;ά &mu;&epsilon; &tau;&omicron;&nu; &tau;&epsilon;&tau;&rho;ά&nu;&tau;&alpha; &tau;&omicron;&upsilon; ί&pi;&pi;&alpha;&rho;&chi;&omicron;&upsilon; &omega;&sigmaf; &mu;&epsilon;&tau;&rho;&iota;&kappa;ό &gamma;&omega;&nu;&iota;ό&mu;&epsilon;&tau;&omicron;. &Kappa;&alpha;&tau;&alpha;&sigma;&kappa;&epsilon;&upsilon;ά&zeta;&omicron;&upsilon;&nu; &beta;&iota;&omega;&mu;&alpha;&tau;&iota;&kappa;ά έ&nu;&alpha; &gamma;&omega;&nu;&iota;ό&mu;&epsilon;&tau;&rho;&omicron; &kappa;&alpha;&iota; &beta;&gamma;&alpha;ί&nu;&omicron;&upsilon;&mu;&epsilon; &sigma;&tau;&omicron; &pi;&rho;&omicron;&alpha;ύ&lambda;&iota;&omicron;. &Epsilon;&kappa;&epsilon;ί &mu;&epsilon;&tau;&rho;ά&mu;&epsilon; &tau;&eta;&nu; &gamma;&omega;&nu;ί&alpha; ύ&psi;&omicron;&upsilon;&sigmaf; &sigma;&tau;&omicron;&chi;&epsilon;ύ&omicron;&nu;&tau;&alpha;&sigmaf; &mu;&epsilon; &tau;&omicron; &gamma;&omega;&nu;&iota;ό&mu;&epsilon;&tau;&rho;&omicron; &tau;&eta;&nu; &kappa;&omicron;&rho;&upsilon;&phi;ή &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&epsilon;ί&omicron;&upsilon;. &Mu;&epsilon;&tau;&rho;ώ&nu;&tau;&alpha;&sigmaf; &epsilon;&pi;ί&sigma;&eta;&sigmaf; &tau;&omicron; ύ&psi;&omicron;&sigmaf; &tau;&omicron;&upsilon; &mu;&alpha;&theta;&eta;&tau;ή&nbsp;- &mu;&epsilon;&tau;&rho;&eta;&tau;ή &kappa;&alpha;&iota; &tau;&eta;&nu; &alpha;&pi;ό&sigma;&tau;&alpha;&sigma;&eta; &tau;&omicron;&upsilon; &alpha;&pi;ό &tau;&eta; &beta;ά&sigma;&eta; &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&epsilon;ί&omicron;&upsilon; , &mu;&pi;&alpha;ί&nu;&omicron;&upsilon;&mu;&epsilon; &xi;&alpha;&nu;ά &sigma;&tau;&eta;&nu; &alpha;ί&theta;&omicron;&upsilon;&sigma;&alpha; &delta;&iota;&delta;&alpha;&sigma;&kappa;&alpha;&lambda;ί&alpha;&sigmaf;. &Sigma;&tau;&omicron; &phi;ύ&lambda;&lambda;&omicron; &epsilon;&rho;&gamma;&alpha;&sigma;ί&alpha;&sigmaf; &upsilon;&pi;&omicron;&lambda;&omicron;&gamma;ί&zeta;&omicron;&upsilon;&mu;&epsilon; &tau;&omicron; ύ&psi;&omicron;&sigmaf; &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&epsilon;ί&omicron;&upsilon; &mu;&epsilon; &chi;&rho;ή&sigma;&eta; &tau;&eta;&sigmaf; &epsilon;&phi;&alpha;&pi;&tau;&omicron;&mu;έ&nu;&eta;&sigmaf; &tau;&eta;&sigmaf; &omicron;&xi;&epsilon;ί&alpha;&sigmaf; &gamma;&omega;&nu;ί&alpha;&sigmaf;-ύ&psi;&omicron;&upsilon;&sigmaf;</p> <p>-&Mu;&epsilon; &tau;&eta; &beta;&omicron;ή&theta;&epsilon;&iota;&alpha; &epsilon;&nu;ό&sigmaf; &alpha;&rho;&chi;&epsilon;ί&omicron;&upsilon; geogebra &upsilon;&pi;&omicron;&lambda;&omicron;&gamma;ί&zeta;&omicron;&upsilon;&mu;&epsilon; &tau;&omicron; ύ&psi;&omicron;&sigmaf; &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&epsilon;ί&omicron;&upsilon; &kappa;&alpha;&iota; &delta;&iota;&alpha;&pi;&iota;&sigma;&tau;ώ&nu;&omicron;&upsilon;&mu;&epsilon; ό&tau;&iota; &epsilon;ί&nu;&alpha;&iota; &alpha;&nu;&epsilon;&xi;ά&rho;&tau;&eta;&tau;&omicron; &alpha;&pi;ό &tau;&omicron; ύ&psi;&omicron;&sigmaf; &tau;&omicron;&upsilon; &pi;&alpha;&rho;&alpha;&tau;&eta;&rho;&eta;&tau;ή &kappa;&alpha;&iota; &alpha;&pi;ό &tau;&eta;&nu; &alpha;&pi;ό&sigma;&tau;&alpha;&sigma;&eta; &tau;&omicron;&upsilon; &alpha;&pi;ό &tau;&eta; &beta;ά&sigma;&eta; &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&epsilon;ί&omicron;&upsilon;</p>