Which shape is always a rhombus?

A square because it has 4 sides that are the same length.(my answer)

A rectangle because it has 2 pairs of parallel sides.

An equilateral triangle because it has 3 sides that are the same length.

A quadrilateral because it has 4 sides

Agree

what is a rhombius

A rhombus is a quadrilateral shape that has 4 sides of equal length. So, the correct answer would be a quadrilateral.

The correct answer is: A square because it has 4 sides that are the same length.

To determine which shape is always a rhombus, we need to understand the properties of a rhombus. A rhombus is a quadrilateral with four sides that are all congruent (the same length). Additionally, opposite sides of a rhombus are parallel to each other, and opposite angles are equal.

Let's evaluate the given options:
- A rectangle does not always meet the criteria of having congruent sides. While it does have two pairs of parallel sides, it only has opposite sides of equal length if it is a square.
- An equilateral triangle is not a rhombus because it has three sides of equal length, but the sides are not parallel to each other.
- While a quadrilateral is a general term for any shape with four sides, not all quadrilaterals are rhombuses. Some quadrilaterals, such as rectangles and squares, may be rhombuses, but it is not a necessary condition.

Therefore, the only shape that always meets the criteria of a rhombus is a square. A square has all four sides equal in length and is a type of rhombus with additional properties, such as having four right angles.