If the shape has 3 angles in all, where two of the angles are acute, then the shape is a scalene triangle.
The only polygon with just acute angles is an acute angled triangle.
A kite shape
A triangle is the only shape that can have only acute angles inside it.
A square has no acute angles. Acute angles are defined as having less than 90 degrees. A square has four 90 degree angles.
If the shape has 3 angles in all, where two of the angles are acute, then the shape is a scalene triangle.
An acute angled triangle
4
"z" has two acute angles a triangle can have 3 acute angles but also will have a angle >= 60degrees acute (also note for every acute angle a obtuse angle is formed the sum of the obtuse and acute angle will = 360) because of this a arrow is the only shape with two acute angles and 1 obtuse
An equalateral triangle
The only polygon with just acute angles is an acute angled triangle.
Any shape with 4 acute angles must have more than 4 sides. Any shape with more than 4 sides can have 4 acute angles (but doesn't have to).
a chevron by . ekam
A kite shape
A triangle with 3 acute angles is an acute triangle. All the angles in an acute triangle are acute.
A triangle is the only shape that can have only acute angles inside it.
An isosceles triangle fits the description given or an equilateral triangle which has 3 equal sides and 3 equal acute angles.