IDNLearn.com: Your one-stop platform for getting reliable answers to any question. Discover comprehensive answers to your questions from our community of knowledgeable experts.
If triangle RST is an acute triangle, then M∠S must be less than 90°.
Acute triangle
An acute angle triangle (or acute-angled triangle) is a triangle in which all the interior angles are acute angles. To recall, an acute angle is an angle that is less than 90°.An acute triangle is a triangle with three acute angles.
A triangle is a basic polygon with three sides and three vertices. Since it has three sides, it has three interior angles.
The sum of interior angles of a triangle must sum to 180°.
Learn more about acute Triangles here :-
https://brainly.com/question/1311149
#SPJ4