Triangles Are Super Strong!
A triangle is the strongest shape for building. You cannot squish a triangle without breaking its sides. Squares and rectangles can lean over, but triangles hold tight!
That is why bridges, towers, and roof frames are full of triangles.
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Look around you!
Can you spot triangles in a roof, a bridge, or a fence? Engineers put them there on purpose!
Wide Bases Are More Stable
A structure with a wide base is harder to tip over. That is why pyramids have been standing for thousands of years — their base is very wide!
Try balancing a pencil on its tip versus standing it flat — the flat base is easier.
Good Foundations
A strong foundation is the bottom part buried in the ground. Skyscrapers have very deep foundations so they do not tip over. Engineers always check the soil before building!