Answer:
acute and equilateral
Step-by-step explanation:
The red lines on each side means that all three sides have the same length. It means that this triangle is an equilateral triangle.
The interior angles of equilateral triangle are all the same and are equal to 60 degrees. Since 60 degrees is lower than 90 degrees, the triangle is acute.
Therefore, the answer is;
acute and equilateral.