<?xml version="1.0" encoding="utf-8"?>
<geogebra format="5.0" version="5.0.593.0" app="classic" platform="w" id="153a2a69-7ced-46d3-98b7-23493481cc65" xsi:noNamespaceSchemaLocation="http://www.geogebra.org/apps/xsd/ggb.xsd" xmlns="" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
<gui>
<window width="800" height="500" />
<perspectives>
<perspective id="tmp">
<panes>
<pane location="" divider="0.2725" orientation="1" />
</panes>
<views>
<view id="4097" visible="false" inframe="false" stylebar="true" location="1,1,1" size="369" window="290,229,700,550" />
<view id="4" toolbar="0 || 2020 , 2021 , 2022 , 66 || 2001 , 2003 , 2002 , 2004 , 2005 || 2040 , 2041 , 2042 , 2044 , 2043" visible="false" inframe="false" stylebar="false" location="1,1" size="300" window="100,100,600,400" />
<view id="8" toolbar="1001 | 1002 | 1003 || 1005 | 1004 || 1006 | 1007 | 1010 || 1008 1009 || 66 68 || 6" visible="false" inframe="false" stylebar="false" location="1,3" size="300" window="100,100,600,400" />
<view id="1" visible="true" inframe="false" stylebar="false" location="3" size="218" window="100,100,600,400" />
<view id="2" visible="false" inframe="false" stylebar="false" location="3" size="200" window="100,100,250,400" />
<view id="16" visible="false" inframe="false" stylebar="false" location="1" size="150" window="50,50,500,500" />
<view id="32" visible="false" inframe="false" stylebar="true" location="1" size="150" window="50,50,500,500" />
<view id="64" toolbar="0" visible="false" inframe="false" stylebar="true" location="1" size="150" window="50,50,500,500" />
<view id="128" visible="false" inframe="false" stylebar="false" location="1" size="480" window="50,50,500,500" />
<view id="70" toolbar="0 || 2020 || 2021 || 2022" visible="false" inframe="false" stylebar="true" location="1" size="150" window="50,50,500,500" />
<view id="512" toolbar="0 | 1 501 5 19 , 67 | 2 15 45 18 , 7 37 | 514 3 9 , 13 44 , 47 | 16 | 551 550 11 , 20 22 21 23 , 55 56 57 , 12 | 69 | 510 511 , 512 513 | 533 531 , 534 532 , 522 523 , 537 536 , 535 | 521 520 | 36 , 38 49 560 | 571 30 29 570 31 33 | 17 | 540 40 41 42 , 27 28 35 , 6 , 502" visible="true" inframe="false" stylebar="false" location="1" size="572" window="100,100,600,400" />
</views>
<toolbar show="false" items="0 39 | 1 501 67 , 5 19 , 72 | 2 15 45 , 18 65 , 7 37 | 4 3 8 9 , 13 44 , 58 , 47 | 16 51 64 , 70 | 10 34 53 11 , 24 20 22 , 21 23 | 55 56 57 , 12 | 36 46 , 38 49 50 , 71 | 30 29 54 32 31 33 | 17 26 62 73 , 14 68 | 25 52 60 61 | 40 41 42 , 27 28 35 , 6" position="1" help="false" />
<input show="false" cmd="true" top="false" />
<dockBar show="false" east="false" />
</perspective>
</perspectives>
<labelingStyle val="3"/>
<font size="12"/>
</gui>
<euclidianView>
<viewNumber viewNo="1"/>
<size width="218" height="498"/>
<coordSystem xZero="118.81818181818174" yZero="312.90909090909076" scale="45.45454545454541" yscale="45.45454545454541"/>
<evSettings axes="false" grid="false" gridIsBold="false" pointCapturing="3" rightAngleStyle="1" checkboxSize="26" gridType="0"/>
<bgColor r="255" g="255" b="255"/>
<axesColor r="0" g="0" b="0"/>
<gridColor r="192" g="192" b="192"/>
<lineStyle axes="1" grid="0"/>
<axis id="0" show="false" label="" unitLabel="" tickStyle="1" showNumbers="true"/>
<axis id="1" show="false" label="" unitLabel="" tickStyle="1" showNumbers="true"/>
</euclidianView>
<kernel>
<uses3D val="true"/>
<continuous val="false"/>
<usePathAndRegionParameters val="true"/>
<decimals val="2"/>
<angleUnit val="degree"/>
<algebraStyle val="0" spreadsheet="0"/>
<coordStyle val="0"/>
</kernel>
<tableview min="-2" max="2" step="1"/>
<scripting blocked="false" disabled="false"/>
<euclidianView3D>
<coordSystem xZero="0" yZero="0" zZero="0.0874658948986391" scale="44.556611570099584" xAngle="17" zAngle="-8"/>
<evSettings axes="false" grid="false" gridIsBold="false" pointCapturing="3" rightAngleStyle="1" gridType="0"/>
<axis id="0" show="false" label="x" unitLabel="" tickStyle="1" showNumbers="true"/>
<axis id="1" show="false" label="y" unitLabel="" tickStyle="1" showNumbers="true"/>
<axis id="2" show="false" label="z" unitLabel="" tickStyle="1" showNumbers="true"/>
<plate show="false"/>
<bgColor r="255" g="255" b="255"/>
<clipping use="false" show="false" size="1"/>
<projection type="0"/>
</euclidianView3D>
<construction title="圓錐截痕" author="" date="">
<element type="angle" label="α">
<angleStyle val="3"/>
<value val="1.186823891356144"/>
<slider min="0" max="6.283185307179586" absoluteScreenLocation="true" width="180" x="13" y="36" fixed="true" horizontal="true" showAlgebra="false"/>
<show object="true" label="true" ev="4"/>
<objColor r="0" g="100" b="0" alpha="0.10000000149011612"/>
<layer val="0"/>
<labelOffset x="79" y="11"/>
<labelMode val="1"/>
<lineStyle thickness="10" type="0" typeHidden="2"/>
<arcSize val="30"/>
<animation step="1°" speed="1" type="0" playing="false"/>
</element>
<element type="angle" label="β">
<angleStyle val="3"/>
<value val="1.8500490071139892"/>
<slider min="0" max="6.283185307179586" absoluteScreenLocation="true" width="180" x="10" y="65" fixed="true" horizontal="true" showAlgebra="false"/>
<show object="true" label="true" ev="4"/>
<objColor r="0" g="100" b="0" alpha="0.10000000149011612"/>
<layer val="0"/>
<labelOffset x="63" y="8"/>
<labelMode val="1"/>
<lineStyle thickness="10" type="0" typeHidden="2"/>
<arcSize val="30"/>
<animation step="1°" speed="1" type="0" playing="false"/>
</element>
<element type="numeric" label="h">
<value val="2.2"/>
<show object="true" label="true"/>
<objColor r="0" g="0" b="0" alpha="0.10000000149011612"/>
<layer val="0"/>
<labelOffset x="80" y="5"/>
<labelMode val="1"/>
<slider min="-5" max="5" absoluteScreenLocation="true" width="200" x="10" y="98" fixed="true" horizontal="true" showAlgebra="false"/>
<lineStyle thickness="10" type="0" typeHidden="1"/>
<animation step="0.1" speed="1" type="0" playing="false"/>
</element>
<expression label="a" exp="((x * cos(α)) * cos(β)) + ((y * cos(β)) * sin(α)) + (z * sin(β)) = h" type="plane" />
<element type="plane3d" label="a">
<show object="true" label="false" ev="4"/>
<objColor r="99" g="219" b="219" alpha="0.5"/>
<layer val="0"/>
<labelMode val="0"/>
<fixed val="true"/>
<coords x="-0.10325557088077568" y="-0.25556650602900227" z="0.9612616959383189" w="-2.2"/>
<fading val="0.1"/>
<lineStyle thickness="0" type="0" typeHidden="1"/>
</element>
<command name="InfiniteCone">
<input a0="(0, 0, 0)" a1="(0, 0, 1)" a2="0.5235987755982988"/>
<output a0="b"/>
</command>
<element type="quadric" label="b">
<show object="true" label="false" ev="4"/>
<objColor r="102" g="204" b="255" alpha="0.75"/>
<layer val="0"/>
<labelMode val="0"/>
<lineStyle thickness="2" type="0" typeHidden="1"/>
<eigenvectors x0="1" y0="0" z0="0" x1="0" y1="1" z1="0" x2="0" y2="0" z2="1"/>
<matrix A0="1" A1="1" A2="-0.33333333333333315" A3="0" A4="0" A5="0" A6="0" A7="0" A8="0" A9="0"/>
<eqnStyle style="implicit"/>
</element>
<command name="IntersectPath">
<input a0="a" a1="b"/>
<output a0="c"/>
</command>
<element type="conic3d" label="c">
<show object="true" label="false" ev="4"/>
<objColor r="255" g="127" b="0" alpha="0.20000000298023224"/>
<layer val="0"/>
<labelMode val="0"/>
<lineStyle thickness="10" type="-1" typeHidden="2"/>
<eigenvectors x0="0" y0="1" z0="1.0" x1="-1" y1="0" z1="1.0"/>
<matrix A0="1" A1="0.8986987307709509" A2="-1.1230351902647338" A3="0" A4="-2.7755575615628914e-17" A5="0.7772149208753669"/>
<eqnStyle style="parametric"/>
</element>
<command name="Line">
<input a0="(0, 0, 0)" a1="(0, 0, 1)"/>
<output a0="d"/>
</command>
<element type="line3d" label="d">
<show object="true" label="false" ev="4"/>
<objColor r="192" g="192" b="192" alpha="0"/>
<layer val="0"/>
<labelMode val="0"/>
<lineStyle thickness="2" type="0" typeHidden="1"/>
<coords ox="0" oy="0" oz="0" ow="1" vx="0" vy="0" vz="1" vw="0"/>
<eqnStyle style="parametric" parameter="λ"/>
</element>
</construction>
</geogebra>