Please help And explain

Here's the Answer :

1. Third side of a triangle should be smaller than the sum of other two sides,

so,

=》

=》

2. Third side of a triangle should be greater than the difference of other two sides

=》

=》

now, by combining the inequalities we get :

=》

hi friend

here is your answer

there are two angles that are alternate interior angle with angle 9

the angle 15 and angle 7 are alternate interior angle with angle 9.

hope it is for you so mark my answer as a brainliest

boxplot e is the answer