Question

Given ΔABC, with m∠A = 55° and m∠B = 70°, which of the following descriptions of the triangle are true?

I. acute
II. obtuse
III. right
IV. scalene
V. isosceles



Select one:


a. II and IV

b. I only

c. I and IV

d. I and V

Answer 1

Angle A, B, and C, in triangle ABC have the measurement of 55, 70 and 55, respectively. The following angles are less than 90 degrees, which makes it acute angles. Since there are two the same angles, it means that there are two sides, which have the same measurement. Therefore, the correct answer is D.