document.write( "Question 512636: if ray ACFG and ray BCDE intersect at C and angle ADC is conngruent to angle BFC, then angle ADE is congruent to angle BFG.
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Algebra.Com's Answer #342686 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "ADC and ADE are a linear pair and are therefore supplementary (the sum of their measures is 180). Same relationship for BFC and BFG.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So mADC + mADE = 180\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "mBFC + mBFG = 180\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Hence mADC + mADE = mBFC + mBFG\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "But we are given that mADC = mBFC, so substitute:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "mBFC + mADE = mBFC + mBFG\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract mBFC from both sides\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "mADE = mBFG : Q.E.D.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( "My calculator said it, I believe it, that settles it \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |