contestada

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

Respuesta :

I and V, 55+70+X equal 180. 55+55+70 equal 180. Therefore, acute and isosceles.