Name the shape. Plane shapes.

It does not have 4 sides. all of it sides are equal. All of its angles are acute.

Equilateral triangle

rectagle

Isaac, a rectangle has:

--4 sides
--they aren't all equal unless it's a square
--4 90 degree angles, none acute.

How did you come up with rectangle? It doesn't fit ANY of the descriptions.

The shape you are describing is called a rhombus. To identify this shape, we can break down its characteristics:

1. It does not have four sides: This means it cannot be a rectangle or square, as they both have four sides.

2. All of its sides are equal: This narrows down the options to shapes with equal side lengths. In your case, the sides of the rhombus are all equal in length.

3. All of its angles are acute: An acute angle is less than 90 degrees. By stating that all angles of the shape are acute, we can eliminate options such as rectangles, squares, and any shape with right angles or obtuse angles.

Putting these criteria together, we can confidently conclude that the shape you are describing is a rhombus.