ASML: ∠S = 69°, ∠M = 57°, ∠L = 54°

This appears to be a description of a triangle with given angles. To be a valid triangle, the sum of the angles must equal 180 degrees.

Let's check the sum of the angles:

\( 69° + 57° + 54° = 180° \)

Since the sum of the angles is 180 degrees, this is a valid triangle.

Answer: The angles sum to 180°, so this is a valid triangle.