Answer :
To check if the side correspound to a rigth triangle is:
[tex]14.5^2=10.5^2+10^2[/tex]if the equality is correct then it is a right triangle if not, then it is not a right triangle so:
[tex]\begin{gathered} 210.25=110.25+100 \\ 210.25=210.25 \end{gathered}[/tex]So the expression was correct so it is a right triangle