document.write( "Question 480050: ∠DEF and ∠ABC are supplementary angles and ∠DEF is four times as large as ∠ABC. Determine the measure of each angle. \r
\n" ); document.write( "\n" ); document.write( "If someone could help me with this, I would be grateful. Also, to get a better understanding of this, would you mind showing me how you arrived to your answers? Thank you so much!
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Algebra.Com's Answer #328840 by MathLover1(20849) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "∠DEF and ∠ABC are supplementary angles and ∠DEF is four times as large as ∠ABC.\r
\n" ); document.write( "\n" ); document.write( "supplementary angles: they add up to $\"180\"$ °\r
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\n" ); document.write( "\n" ); document.write( "∠DEF=4*∠ABC.......substitute ∠DEF in ∠DEF + ∠ABC= $\"180\"$ °\r
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\n" ); document.write( "\n" ); document.write( "∠DEF + ∠ABC= $\"180\"$ °\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "4*∠ABC + ∠ABC= $\"180\"$ °\r
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\n" ); document.write( "\n" ); document.write( "5*∠ABC = $\"180\"$ °\r
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\n" ); document.write( "\n" ); document.write( "∠ABC = $\"180%2F5\"$ °\r
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\n" ); document.write( "\n" ); document.write( "∠ABC = $\"36\"$ °....now find ∠DEF\r
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\n" ); document.write( "\n" ); document.write( "∠DEF=4*∠ABC\r
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\n" ); document.write( "\n" ); document.write( "∠DEF=4* $\"36\"$ °\r
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\n" ); document.write( "\n" ); document.write( "∠DEF= $\"144\"$ °\r
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