A triangle that has three unequal sides and one obtuse angle is referred to as an obtuse scalene triangle.
The triangle is (d) obtuse scalene
Given that:
[tex]Sides = \{3cm, 5cm, 7cm\}[/tex]
[tex]\theta = 120^o[/tex]
The three sides of the triangle are not equal i.e.
[tex]3cm \ne 5cm \ne 7cm[/tex]
This means that the triangle is a scalene triangle
One of the angles is given as: [tex]120^0[/tex]
[tex]120^0[/tex] is greater than [tex]90^o[/tex]
i.e.
[tex]120^o > 90^o[/tex]
This implies that the angle of the triangle is obtuse.
Hence, the given triangle is (d) obtuse scalene
Read more about triangles at:
https://brainly.com/question/13515945
