Drag the two sliders until you feel the blue segments are in line with each other.<br />And red egments are in line with each other,too!<br /><br />Click the show check box to find out the answer!<br /><p><applet code='users.ntnu.fkh.illusion_straightline_pkg.illusion_straightlineApplet.class' codebase='ejsuser/2/' archive='ejs_illusion_straightline.jar' name='illusion_straightline7741' id='illusion_straightline7741' width='519' height='418' mayscript=true><param name='draggable' value='true'></applet></p><a href='ejstranslation.php?uid=1&muid=2&post=7741' target='translation'>translate strings in simulation to different language format</a> before download<br><a href='htmltag.php?code=users.ntnu.fkh.illusion_straightline_pkg.illusion_straightlineApplet.class&name=illusion_straightline&muid=2' target='_blank'>Full screen applet</a> or <font color="#FF0000">Problem viewing java?</font><a href="http://www.java.com/en/download/help/jcp_security.xml" target="trusted">Add http://www.phy.ntnu.edu.tw/ to exception site list</a><br><b>Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop.</b> This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/2.5/tw/deed.en">Creative Commons Attribution 2.5 Taiwan License</a><br><a href='ntnujavazip.php?ejsuserjar=7741' title='ejs_illusion_straightline.jar' target='userjar'>Download EJS jar file</a>(953.4kB):double click downloaded file to run it. (13 times by 11 users) , <a href='ntnujavazip.php?ejsuserjar=7741&type=ejs' target='userjar'>Download EJS source</a> <a href='/demolab/phpBB/ejswui.php?ejsuser=ejsuser/2/users/ntnu/fkh/illusion_straightline.ejs' target='ejsxml'>View EJS source</a><img src='images/help.gif' onClick='showejsmsg(7741)'><img src='images/plus.gif' onClick='ejsparser(7741,"illusion_straightline");'><div id='ejsmsg7741'></div>