find the area of a right angled riangle. find the distance from A to B. Find the distance from B to C. Find the midpoint

B(-1,4)
A(-1,-1)
C(4,-1)

thanks for your time and help.

2 answers

AB = 5
BC = √(-5)^2 + )5^2) = √50 = 5√2

what midpoint?
how did you find the answer? did you take the slope??? can you explain how