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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).

Q: What shape has four acute angles?

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A rhombus is a shape having two acute angles and four equal sides.

it is a rhombus

A four edged star.

No shape does. If a shape has four angles, the sum of the four angles is 360°. If two are right angles, their sum is 2 x 90° = 180°, leaving 360° - 180° = 180° for the two remaining angles. An acute angle is less than 90°, so the sum of two acute angles is less than 90° + 90° = 180°, but in this shape their sum must be equal to 180°; thus no shape can exist. If one angle is acute and the other is obtuse, then their sum can be 180° and the shape is a trapezium.

If the figure has only four sides all together, then it's not possible for all four angles to be acute.

Related questions

A rhombus is a shape having two acute angles and four equal sides.

A square has no acute angles. Acute angles are defined as having less than 90 degrees. A square has four 90 degree angles.

it is a rhombus

A four edged star.

No shape does. If a shape has four angles, the sum of the four angles is 360°. If two are right angles, their sum is 2 x 90° = 180°, leaving 360° - 180° = 180° for the two remaining angles. An acute angle is less than 90°, so the sum of two acute angles is less than 90° + 90° = 180°, but in this shape their sum must be equal to 180°; thus no shape can exist. If one angle is acute and the other is obtuse, then their sum can be 180° and the shape is a trapezium.

If the shape has 3 angles in all, where two of the angles are acute, then the shape is a scalene triangle.

If the figure has only four sides all together, then it's not possible for all four angles to be acute.

The only polygon with just acute angles is an acute angled triangle.

a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.

An acute angled triangle

you could count the sides or acute, obtuse, or right angles.

Impossible.