Explain how you know that all right triangles with an acute angle measuring n degrees are similar to each other

Solution: Each right triangle has one angle equal to 90 degree. Since, one acute angle is equal to n, then the next angle will be equal to (90-n) degree. Here both the triangles will have same angles - 90 degreee, n degree, and 90-n degree. So, if all angles are same, then the triangles are similar angles.