Question

comment appelle-t-on un triangle dont les angles mesurent 30°, 30° et 120°?
triangle isocèle obtusangle
triangle scalène acutangle
triangle rectangle non isocèle
triangle isocèle non rectangle
triangle équilatéral
triangle rectangle isocèle

Explanation:

An isosceles triangle has two equal - measure angles. Here, two angles are 30°. An obtuse - angled triangle has one angle greater than 90°. Here, one angle is 120°.

Answer:

Triangle isocèle obtusangle