F. Shape 4
Explanation
An acute triangle is a triangle in which each angle is an acute angle,it works for any shape according to the category in the question, An acute angle is an angle that measures between 90° and 0°
Now, let's check the shape 4
as we can see, the angle B , is greater than 90. it means angle B is NOT an acute angle.
therefore the shape number 4 is wrongly categorized.
so, the answer is
F. Shape 4
I hope this helps you
