Question

in figure 6 ab || CD is angle 1 is equal to 3 x minus 10 degree and Angle 7 is equal to 5 x minus 30 degree find the measure of angle 1 and angle 7​

Answer 1

angle 3 is equals to angle 7 because of alternate angles so angle 3 is equals to 5 x minus 30 degree then angle 1 is equal to angle 3 because of vertically opposite angles then 3 x minus 10 is equals to 5 x minus 30 degree then X = equals to 10 degree. then we will put the value of x in angle 1 so the answer will be 10 degree then we will put the value of x in angle 7 then the answer is 20 degree