Triangle ABC is an obtuse triangle with the obtuse angle at vertex B. Angle A must be

Aless than 90°.
Bgreater than 90°.
Ccongruent to angle B.
Dcongruent to angle C.

Verified Answer :

We have to find the correct statement for angle A in a triangle ABC,
which is an obtuse triangle. We know that angle B is obtuse ( greater
than 90 degrees ). Therefore angles A and C must be less than 90
degrees. Angle A can not be congruent to angle B ( angle B > angle A
). It can be congruent to angle C but just in case that ABC is an
isosceles obtuse triangle. Answer: Angle A must be A ) less than 90
degrees.

Answer:

The answer is A buddy ;)