ASML: ∠S = 23°, ∠M = 90°, ∠L = 67°

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:

\( 23° + 90° + 67° = 180° \)

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.