Answer:
(6x + 5)° + 5x° + (9x + 15)° = 180° (all triangles = 180°
20x + 20 = 180°
20x = 160°
x = 8
Angles = 53° + 40° + 87°
All 3 angles are less than 90° and none of the angles are equal so the triangle is acute scalene.
Source https://www.1728.org/triang.htm
Step-by-step explanation:
