Question

Which of the following is arranged as right-angled triangle, acute-angled triangle and obtuse-angled triangle respectively from left to right?

• A.
• B.
• C.
• D. None

Answer 1

The correct option is A

In the first option, the first triangle have one of its angle as right angle, the second triangle have all its angle to be less than ${90}^o.$ and third triangle have one of its angle as obtuse angle.

$\therefore$ The order of arrangement is right-angled triangle, obtuse-angled triangle and acute-angled triangle from left to right.
So, option $\left(a\right)$ is correct.