Question 404733


A trapezoid has supplementary adjacent angles. So this means that {{{A+B=180}}}. 

given:

the measure of angle B is 40 degrees more than the measure of angle {{{A}}}, which means that {{{B= A + 40}}}


 {{{A+B=180}}}

 {{{A+A + 40=180}}}

 {{{2A =180 -40}}}

{{{2A =140}}}

{{{A =140/2}}}

{{{A =70}}}.....m angle {{{A}}}...now find {{{B}}}

{{{B=A + 40}}}

{{{B= 70+ 40}}}

{{{B= 110}}}..........m angle {{{B}}}..