document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=604203>Question 604203</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have Everything made for my 2 column proof, the only thing I am having trouble with is what to write for my plan. Please help me with my plan!\r<BR>\n" );
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document.write( "Given: PQ is a diameter of circle O, AB is tangent to O at P, CD is tangent to O at Q<BR>\n" );
document.write( "Prove: AB // CD <BR>\n" );
document.write( "Plan: ??\r<BR>\n" );
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document.write( "Statements:<BR>\n" );
document.write( "O is a circle     (given)<BR>\n" );
document.write( "PQ is a diameter of O     (given)<BR>\n" );
document.write( "AB tangent to O at P     (given)<BR>\n" );
document.write( "<APQ=90°      (def. of tangent)<BR>\n" );
document.write( "CD tangent to O at Q     (given)<BR>\n" );
document.write( "<CQP=90°    (def. of tangent)<BR>\n" );
document.write( "AB // CD     (sum of interior angles is 180°)\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #381337 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=381337\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> PQ is a transversal between AB and CD\r<BR>\n" );
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document.write( "AB and CD are parallel because the alternate interior angles formed by the transversal are equal\r<BR>\n" );
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document.write( "the angles are equal because tangent lines are perpendicular to the diameter at the point of tangency<BR>\n" );
document.write( "___ perpendicular lines form equal right angles </SPAN>\n" );
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