Question

Will mark as brainliest. Pls answer fast and please give a proper explaination.

Answer 1

Option A is correct, as in a right angle triangle the first angle is 90 and the sum of the rest two has to be 90 (angle sum property), therefore neither of the 2 angles can be 90, and for a ∆ to be an obtuse-angled ∆, it must have an angle greater than 90.

Answer 2

Answer

As per question, option (a) is always true.

Reason

In a right angled triangle, one angle is 90° and rest angles are for sure acute.

We know that, obtuse triangle means, one angles must be strictly greater than 90°, but here no angle is greater than 90°.

I hope my answer helps you.