a^2 + b^2 =c^2 

Triangle 1

1^2+1^2=c^2

1+1=2

c= √(2

1.4

Triangle 2

1^2+1.4^2=c^2

1+2=3

√(3

1.7

Triangle 3

1^2+1.7^2=c^2

1+3=4

√(4

2