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F triangle RST is an acute triangle, then m∠S must be less than 90°. equal to 90°. equal to 100°. greater than 90° and less than 180°.

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Answer:

A.  Less than 90

Step-by-step explanation:

ashishdwivedilVT

The correct answer is less than 90°.

To find the angle m ∠S .

What is Triangle?

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

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