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The strongest shape for building is the triangle.

The strongest shape for building is the triangle.

Bridges and towers use triangles to stay strong. A triangle does not wobble or squish easily.

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A circle is a perfectly round shape with no corners. A circle is a perfectly round shape with no corners. A triangle has three straight sides and three corners. A triangle has three straight sides and three corners. A square has four sides that are all the same length. A square has four sides that are all the same length. A star shape has pointy tips sticking out all around. A star shape has pointy tips sticking out all around. A heart shape stands for love and looks like two bumps and a point. A heart shape stands for love and looks like two bumps and a point.