Question

Determine whether the triangle is a right triangle 12, 10, 11...​

Answer 1

no it's not right angled

Explanation:

thats because the left hand side is not equal to the right hand side

Answer 2

You were on the right track: basically if a²+b²=c² is true , it's a right triangle...

a²+b²=c²

11²+10²=12²?

121+100=144?

221=144?

221≠144

Since they're not equal, the triangle isn't a right triangle.