A Square has 4 sides, the shape you want that has twice as many sides as this is called a Octagon.
( Oct = 8 - as in Octopus ).
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Try drawing each shape out to see which doesn't fit!Think about how many sides each shape has.Rectangle - 4 sidesCircle - 1 side (an infinite # of sides?), certainly NOT 4 sides.Square - 4 sidesParallelogram - 4 sides.(A parallelogram is a shape with 2 pairs of parallel lines. like a square, or rectangle)
A square prism has six sides
A figure with twice as many sides as a triangle is a hexagon. A triangle has 3 sides, so double that would be 6 sides. A hexagon is a polygon with 6 sides and 6 angles. It is a regular polygon with all sides and angles congruent.
octagon-8 sides
There are four sides in a square.