Question

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

A) less than 90°.
B) greater than 90°.
C) congruent to angle B.
D) congruent to angle C.

Answer 1

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 2

The answer is A buddy ;)