Answer :
ABC is forming a Scalene Triangle.
What is triangle?
Having three sides, three angles, and three vertices, a triangle is a closed, two-dimensional object. A polygon also includes a triangle. There are 3 types of triangle based on criteria of angles and 3 types based on criteria of sides.
What is Scalene Triangle?
A scalene triangle is a triangle with three different side lengths and three different angle measurements.
As AB = 5 cm , BC = 8cm , AC =4cm
As all the side is of different length.
∠A = 45°, ∠B= 50°, ∠C = 85°
All angles of ΔABC are different.
Therefore it form Scalene Triangle.
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