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1 acute angle = 1 acute angle
One acute angle
An ACUTE angle is any angle between, but NOT including, 0 to 90 degrees. 0 degrres ; no angle 90 degrees ; right angle. Angles between 90 and 180 degrees are OBTUSE Angles between 180 and 360 degrees are REFLEX.
If it is a 'regular' hexagon, then all angles are congruent, and all are obtuse.
An acute angle is less than 90 degrees. Therefore, as a rectangle has 4 right-angles (90 degrees) there are no acute angles.