Question 216103
{{{A=2k}}}, {{{B=3k}}}, {{{C=4k}}}
 
{{{2k+3k+4k="180°"}}}
{{{9k="180°"}}}
{{{k="20°"}}}
 
{{{A=2k="2(20°)"="40°"}}}, 
{{{B=3k="3(20°)"="60°"}}},
{{{C=4k="4(20°)"="80°"}}} 
 
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{{{A=ak}}}, {{{B=bk}}}, {{{C=ck}}}
 
{{{ak+bk+ck="180°"}}}
{{{k(a+b+c)="180°"}}}
{{{k=180/(a+b+c)}}}°
 
{{{A=ak=a(180/(a+b+c))=(180a)/(a+b+c)}}}°
{{{B=bk=b(180/(a+b+c))=(180b)/(a+b+c)}}}°
{{{C=ck=c(180/(a+b+c))=(180c)/(a+b+c)}}}°