Hello from MrBillDoesMath!
Answer:
Scalene
Discussion:
From the Pythagorean theorem:
Length AC = sqrt(2^2 + 1^2) = sqrt (5)
Length CB = sqrt (4^2 + 2^2) = sqrt(20) = sqty(4*5) = 2 sqrt(5)
Length AB = 5
The lengths are all different so ABC is a scalene triangle
Thank you,
MrB
