Question 1133333


supplementary angles are two angles whose sum is {{{180}}}°

if angles {{{X}}} and {{{Y}}}, we have

{{{X+Y=180}}}°

if angle {{{X}}}is {{{3}}} times the measure of angle {{{Y}}}, we have

{{{X=3Y}}}

=> {{{3Y+Y=180}}}°

 {{{4Y=180}}}°

{{{Y=180/4}}}°

{{{Y=45}}}°


=>{{{X=3Y}}}

{{{X=3*45}}}

{{{X=135}}}°