pls help

1. what is the length of AB

2. what is the length of BC

3. what is the perimeter of this triangle

4. given A(2,4) and B(5,-4), what is the slope of a line that is parallel to AB

5. what is the slope of a line that is perpendicular to AB

pls help 1 what is the length of AB 2 what is the length of BC 3 what is the perimeter of this triangle 4 given A24 and B54 what is the slope of a line that is class=