<?xml version="1.0" encoding="UTF-8"?>
<solution xmlns="http://geocentral.net">
<version>3.1</version>
<envelope>
<author>
<name>Peter Cerman</name>
<email>pcerman@centrum.sk</email>
<web/>
</author>
<comments>Решение задачи-образца</comments>
</envelope>
<problem>
<envelope>
<author>
<name>Stelian Dumitrascu</name>
<email>stelian@geocentral.net</email>
<web>http://geocentral.net/geometria</web>
</author>
<comments>Задача-образец</comments>
</envelope>
<text>Найди угол между диагональю GI и гранью GEF.</text>
<notepad>
</notepad>
<figures>
<figure>
<name>Пирамида</name>
<color>#ffff</color>
<transparent>true</transparent>
<labelled>true</labelled>
<solid>
<points>
<point>
<label>A</label>
<coords>0.9590909090909091 0.0 0.06680426571226851</coords>
</point>
<point>
<label>E</label>
<coords>0.10909090909090911 0.0 1.4548484532894026</coords>
</point>
<point>
<label>F</label>
<coords>-0.7193181818181819 0.2500000000000001 -0.05010319928420138</coords>
</point>
<point>
<label>G</label>
<coords>0.19181818181818167 -0.8 0.013360853142453692</coords>
</point>
<point>
<label>I</label>
<coords>-0.03820554445554441 0.7184065934065934 -0.0026611589363403627</coords>
</point>
</points>
<lines>
<line>
<labels>
<label>I</label>
<label>G</label>
</labels>
</line>
</lines>
</solid>
<camera>
<attitude>-0.4798297595615975 -0.32224010172017575 -0.44285261288914507 0.6854241620629429</attitude>
</camera>
</figure>
</figures>
<answer>
<type>number</type>
<value>0.5257165960644197</value>
</answer>
</problem>
<log>
<action>
<className>GDivideLineAction</className>
<figureName>Пирамида</figureName>
<numerator>1</numerator>
<denominator>2</denominator>
<p1Label>G</p1Label>
<p2Label>I</p2Label>
</action>
<action>
<className>GPerpendicularAction</className>
<figureName>Пирамида</figureName>
<p0Label>J</p0Label>
<p1Label>G</p1Label>
<p2Label>F</p2Label>
</action>
<action>
<className>GPerpendicularAction</className>
<figureName>Пирамида</figureName>
<fLabel1>E</fLabel1>
<fLabel2>F</fLabel2>
<fLabel3>G</fLabel3>
<p0Label>K</p0Label>
<p1Label>G</p1Label>
<p2Label>F</p2Label>
</action>
<action>
<className>GCutAction</className>
<figureName>Пирамида</figureName>
<p0Label>K</p0Label>
<p1Label>L</p1Label>
<p2Label>J</p2Label>
<figure1Name>Фигура1</figure1Name>
<figure2Name>Фигура2</figure2Name>
</action>
<action>
<className>GPerpendicularAction</className>
<figureName>Фигура2</figureName>
<p0Label>J</p0Label>
<p1Label>L</p1Label>
<p2Label>K</p2Label>
</action>
<action>
<className>GCutAction</className>
<figureName>Фигура2</figureName>
<p0Label>J</p0Label>
<p1Label>G</p1Label>
<p2Label>O</p2Label>
<figure1Name>Фигура3</figure1Name>
<figure2Name>Фигура4</figure2Name>
</action>
<action>
<className>GMeasureAngleAction</className>
<figureName>Фигура4</figureName>
<p0Label>G</p0Label>
<p1Label>J</p1Label>
<p2Label>O</p2Label>
<variableName>Угол</variableName>
</action>
<action>
<className>GSolutionAnswerAction</className>
<value>Угол</value>
</action>
</log>
</solution>