Question

Decide wether the following sides are acute obtuse or a right triangle.

Answer 1

The acute triangle is defined by the condition,

Here, we have,

`\begin{gathered} 19^2=361 \\ 12^2=144 \\ 15^2=225 \\ 12^2+15^2>19^2 \end{gathered}`

Thus, the triangle is an obtuse triangle.