The correct answer is less than 90°.
To find the angle m ∠S .
A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices.
An acute angle is an angle that measures between 90° and 0°, meaning it is smaller than a right angle (an “L” shape) but has at least some space between the two lines that form it.
So, the correct answer is less than 90°.
Learn more about Triangle here:
https://brainly.com/question/10573585
#SPJ6