-- An 'acute triangle' is a triangle in which each of the three interior angles is an acute angle.
-- Each of the three interior angles in every equilateral triangle is a 60-degree angle.
-- Any angle of less than 90 degrees is an acute angle.
-- It sure looks like every equilateral triangle does fit the definition of 'acute triangle'.
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No. All triangles MUST have at least two acute angles.
No, but all equilateral triangles are acute. Acute: All angles of the triangle are less than 90 degrees. Equilateral: All angles of the triangle are 60 degrees.
Yes.
All equilateral triangles are acute triangles, since all the angles are less than 90 degrees.
An acute triangle has all three angles less than 90 degrees.