Question

how many acute angles must an acute triangle have?

Explanation:

Step1: Recall the definition of an acute triangle

An acute triangle is a triangle where all angles are less than \(90^{\circ}\).

Step2: Consider the properties of triangle angles

The sum of angles in a triangle is \(180^{\circ}\). If one angle were \(90^{\circ}\) or more, it would not be an acute triangle. So all three angles must be acute.

Answer:

3