I’m not sure which answer specifically you want like as in an explanation or not, but I will give an explanation if this is not the answer please let me know
Answer: An isosceles right triangle is a type of right triangle whose legs (base and height) are equal in length. Since the two sides of the right triangle are equal in measure, the corresponding angles are also equal. Therefore, in an isosceles right triangle, two sides and the two acute angles are equal.