Answer: acute and isosceles
Step-by-step explanation: Notice that the triangle shown here has no right angles and no obtuse angles, which means that all of the angles of the triangle are acute. When classifying triangles, if all of the angles of the triangle are acute, then the triangle is acute.
Now, notice that two sides of the triangle have the same length.
If two sides of a triangle have the same length,
then we say that the triangle is isosceles.
So this triangle is acute and isosceles.