The triangle is an acute triangle ( option B)
A triangle is a 3 sided polygon , there are different types of triangle.
acute triangle : This is a type of triangle that it's angles are less than 90°
Right triangle: This is a type of triangle in which one of it's angles is exactly 90°
obtuse triangle : This is a type of in which one of it's triangles is more than 90°.
Therefore, from the triangle above all it's angles are less than 90°, thus the triangle Is an acute triangle.