But in my dig angle b=90. my co-ordinated were in the wrong places so my answer was wrong.
my working was like this: (as per the 1st dig)
AB=\(\sqrt{}25 = 5\)
BC =\(\sqrt{}50 =5\sqrt{}2\)
AC= \(\sqrt{}25 = 5\)
using pythagoram theorm, AC²=AB²+BC²
5=5²+\(5\sqrt{}2\)²
5 not = 25+50
But as per Alan's dig:
AB=\(\sqrt{}25 = 5\)
BC =\(\sqrt{}25 = 5\)
AC=\(\sqrt{}50 =5\sqrt{}2\)
using pythagoram theorm, AC²=AB²+BC²
\(5\sqrt{}2\)²=5²+5²
50=25+25=50
+302 
