acute is the right answer, because an acute angle is less than 90 degrees so that way a shape that is less than 90 degees is acute
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A shape that can contain no acute angles is a rectangle. In a rectangle, all interior angles are right angles, which are exactly 90 degrees. This means there are no angles smaller than 90 degrees, which are considered acute angles. Therefore, a rectangle is an example of a shape that contains no acute angles.
obtuse angles
Acute angles are greater than zero and less than 90 degrees. Right angles are exactly 90 degrees. Obtuse angles are greater than 90 and less than 180 degrees.
The shape you are describing is a hexagon. A hexagon has six sides, which are made up of six line segments. Since it does not have any right angles, the sum of its interior angles must be less than 540 degrees, and therefore two of its angles are less than a right angle.
An angle that is more than 180 degrees and less than 360 degrees is called a "reflex" angle.NoteAngles less than 90 degrees are called "acute" angles. An angle that is exactly 90 degrees is called a "right" angle.Angles that are more than 90 degrees but less than 180 degrees are call "obtuse" angles.An angle that is exactly 180 degrees is called a "straight line".Angles that are more than 180 degrees and less than 360 degrees are called "reflex" angles.