Respuesta :

It's an isosceles triangle because two of the sides are equal. An equilateral triangle is when all of the sides are equal, and a scalene triangle is when all of the side lengths are different. An acute triangle is when all three angle measures are less than 90 degrees. Hope this helps!
Well scalene triangles are known as right triangles too and that is a right triangle. This is your answer, but let's make sure first.

Isosceles triangles are acute triangles.

Equilateral triangles are triangles that have the same degrees in each angle. (40*, 40*, 40*)

Acute triangles are acute triangles.

Your final answer is A. scalene

Hoped I helped!
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