No, but there is one rule that you can always follow for triangles, and that is all the angles in a triangle add up to 180 degrees ---
So an angle can be larger than 90 degrees as long as all three angles add up to 180 degrees..
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It impossible for a triangle to have three acute angles. * * * * * What? A triangle most certainly can have three acute angles. Such a triangle would be called an acute-angled triangle!
Acute Triangle
yes it is
Sides aren't acute, angles are. A triangle with three acute angles would be called (appropriately enough) an acute triangle.
Yes... an acute triangle does have three angles to it.