By using a protractor with the knowledge that an acute angle is greater than 0 but less than 90 degrees
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Yes. Every triangle with an obtuse angle must have two acute angles.
Yes because the measure of each angle in an equilateral triangle is 60 degrees which is an acute angle.
no, it is impossible
Impossible
It's entirely possible to draw a quadrilateral with 3 acute angles.The fourth angle must be obtuse or reflex, but so what ? !