Question

In triangle ABC, angle A=2x degrees, B=(x-45) degrees and C=(x-15). What kind of triangle is ABC?

Answer 1

Answer: obtuse triangle

Explanation:

ABC=180 degrees

2x+x-45+x-15=180

2x+x+x-45-15=180

4x-60=180

4x=240

x=60

Angle A: 2(60)=120 degrees

Angle B: x-45=60-45=15 degrees

Angle C: x-15=60-15=45 degrees

Hence, the triangle is an obtuse triangle.