Less than 90 degrees.
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There are three acute angles in an acute triangle and they add up to 180 degrees.
Less than 90 degrees.
A triangle can have 3 acute angles that add up to 180 degrees
If the triangle is less than 90 degrees, it is an acute triangle
An equilateral triangle has 3 equal acute angles of 60 degrees and it has 3 lines of symmetry.