Answer
Hence, this is a right triangle.
Work Step by Step
a.
$a=12 \; cm,b=35\; cm$ and $c=37\;cm$.
We have $a^2+b^2=12^2+35^2=144+1225=1369$.
and $c^2=37^2=1369$.
It follows Pythagorean Theorem.
$a^2+b^2=c^2$
Hence, this is a right triangle.