Question

1. In the following figure 'l' and 'm' are two
lines intersected by a transversal 'p'.
If angle1 = 130° and angle 8 = 50°
then, is 7 Il m ? State reason.
​

Answer 1

angle 1=130°

linear pair angle 1+ angle 2=180°

angle 2 = 180-130

angle 2 = 50°

therefore,angle 3 =130°

angle 4= 50°

angle 8 = 50°

linear pair angle8 + angle 7 =180°

50°+angle 7= 180°

therefore angle 5 = 130°

angle 6 =30°