Oh, dude, are we building a bridge or planning a geometry heist? Well, technically speaking, an arch is stronger than a triangle because it can distribute weight more evenly. But hey, if you're just doodling shapes on a napkin, I don't think it really matters which one you pick.
An arc.
Circles are a stronger geometrical shape than a triangle. Circles distribute weight equally which makes it more stable. That is why pot holes are circles.
A triangle must have straight lines.
what shape is not a triangle but has 3 sides
A triangle is a geometric shape.
A circles structural shape is in fact stronger than a triangles structural geometric shape.
An arc.
triangle for small parts and an arch for a large part.
Circles are a stronger geometrical shape than a triangle. Circles distribute weight equally which makes it more stable. That is why pot holes are circles.
A triangle must have straight lines.
Type your answer here... arch
Given unchanging lengths of the sides, a triangle cannot change its shape. But given unchanging lengths of the sides of a rectangle, it can change its shape by some force by changing its angle measurements. If a 2d load were put on a rectangle, enough force could squish the rectangle into a parallelogram, whereas a triangle cannot change shape without changing the lengths of its sides or bending its sides out of shape (most likely into a curve).Given these properties, a rectangle can collapse its shape much more easily and is flimsy compared to a triangle.
The bridge is supported by an arch or a series on arches to make the bridge stronger.
a truss
what shape is not a triangle but has 3 sides
A triangle is a geometric shape.
simple arch shape, like dc has round domes, cirlcles. simple shape, really.