document.write( "Question 1041410: In the given fig.AB//CD and P is any point. prove that angle ABP+angle BPD + angle CDP=360^0.
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document.write( "                B\r\n" );
document.write( "  A<------------.-------------------->\r\n" );
document.write( ".................\               \r\n" );
document.write( "..................\                \r\n" );
document.write( "...................\                   \r\n" );
document.write( "....................\P                    \r\n" );
document.write( "..................../                    \r\n" );
document.write( ".................../                   \r\n" );
document.write( "................../                  \r\n" );
document.write( "................./                 \r\n" );
document.write( " C<-------------.------------------->\r\n" );
document.write( "                D

\n" ); document.write( "I HOPE THE FIG. IS UNDERSTOOD
\n" ); document.write( "I DONT KNOW HOW TO SEND TH IMAGE ON THIS...I ACTUALLY WANTED TO HOW HOW I DID THIS SUM..PLEASE HELP!
\n" ); document.write( "THE DOTS ARE NOTHING THE FIGURE WASNT COMING WITHOUT THEM.
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Algebra.Com's Answer #656382 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
In the given fig.AB//CD and P is any point. prove that
\n" ); document.write( "angle ABP+angle BPD + angle CDP=360^0.
\n" ); document.write( "(the fig. looks something like this)\r
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\r\n" );
document.write( "                B\r\n" );
document.write( "  A<------------.-------------------->\r\n" );
document.write( ".................\               \r\n" );
document.write( "..................\                \r\n" );
document.write( "...................\                   \r\n" );
document.write( "....................\P                    \r\n" );
document.write( "..................../                    \r\n" );
document.write( ".................../                   \r\n" );
document.write( "................../                  \r\n" );
document.write( "................./                 \r\n" );
document.write( " C<-------------.------------------->\r\n" );
document.write( "                D\r\n" );
document.write( "Draw AC\r\n" );
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document.write( "                B\r\n" );
document.write( "  A<------------.\r\n" );
document.write( "   |.............\               \r\n" );
document.write( "   |..............\                \r\n" );
document.write( "   |...............\                   \r\n" );
document.write( "   |................\P                    \r\n" );
document.write( "   |................/                    \r\n" );
document.write( "   |.............../                   \r\n" );
document.write( "   |............../                  \r\n" );
document.write( "   |............./                 \r\n" );
document.write( " C<-------------.\r\n" );
document.write( "                D\r\n" );
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document.write( "Then figure ACDPB is a pentagon, a 5-sided\r\n" );
document.write( "polygon.  The formula for the sum of the\r\n" );
document.write( "interior angles of an n-sided polygon is\r\n" );
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document.write( "(n-2)180°\r\n" );
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document.write( "Since n=5, The sum of angles \r\n" );
document.write( "A+C+D+P+B = (5-2)(180°) = 3(180°) = 540°.\r\n" );
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document.write( "The sum of Angles A+C = 180° because they are\r\n" );
document.write( "angles on the same side of transversal AC cutting\r\n" );
document.write( "parallel lines AB and CD, and so they are supplementary.\r\n" );
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document.write( "A+C+D+P+B = 540°\r\n" );
document.write( "A+C       = 180°\r\n" );
document.write( "---------------=\r\n" );
document.write( "    D+P+B = 360°   Subtracting equals from equals.\r\n" );
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document.write( "[Notice I just labeled the angles with one letter \r\n" );
document.write( "instead of 3, but I erased the extensions of AB and\r\n" );
document.write( "CD, so you could tell what angles I meant.]\r\n" );
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document.write( "Edwin
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