<?xml version="1.0"?>
<div class="add">

<b>consider </b><font color="Maroon">A</font> being   <a href="incsp_1.html#NM2">LINE</a> of <font color="Maroon">IPP</font>, <font color="Maroon">B</font> being   <a href="incsp_1.html#NM2">LINE</a> of <font color="Maroon">IPP</font>;<br/>
<b>consider </b><font color="Maroon">a</font> being   <a href="incsp_1.html#NM1">POINT</a> of <font color="Maroon">IPP</font><b> such that </b><br/><a NAME="E3:3_1_1"/><i><font color="Green">E47</font></i>: 
( not <font color="Maroon">a</font> <a href="incsp_1.html#R1">on</a> <font color="Maroon">A</font> &amp; not <font color="Maroon">a</font> <a href="incsp_1.html#R1">on</a> <font color="Maroon">B</font> )
 <b>by </b><i><a class="ref" href="projred1.html#T6">PROJRED1:6</a></i>;<br/>
<b>take </b>
 <a href="projred1.html#K1">IncProj</a> <font color="Maroon">A</font>,<font color="Maroon">a</font>,<font color="Maroon">B</font>
;<br/>

<b>thus </b><a NAME="E4:3_1_1"/>
 ex <font color="Olive">a</font> being  <a href="incsp_1.html#NM1">POINT</a> of <font color="Maroon">IPP</font> ex <font color="Olive">A</font>, <font color="Olive">B</font> being  <a href="incsp_1.html#NM2">LINE</a> of <font color="Maroon">IPP</font> st <br/>( not <font color="Olive">a</font> <a href="incsp_1.html#R1">on</a> <font color="Olive">A</font> &amp; not <font color="Olive">a</font> <a href="incsp_1.html#R1">on</a> <font color="Olive">B</font> &amp;  <a href="projred1.html#K1">IncProj</a> <font color="Maroon">A</font>,<font color="Maroon">a</font>,<font color="Maroon">B</font> <a href="hidden.html#R1">=</a>  <a href="projred1.html#K1">IncProj</a> <font color="Olive">A</font>,<font color="Olive">a</font>,<font color="Olive">B</font> )
 <b>by </b><i/>;<br/>


</div>
