Which term describes tiling the plane with repeating shapes that fit together without gaps?

• A. Tesselation
• B. Sequencing
• C. Order of magnitude
• D. Cardinal numbers

Answer: (A)

Tessellation describes tiling the plane with repeating shapes that fit together without gaps. It means covering every point on a flat surface using shapes arranged in a pattern so there are no spaces and no overlaps. Regular tessellations use the same shape over and over, like squares, equilateral triangles, or regular hexagons, and still fill the plane perfectly. Some tilings may combine different shapes as long as they fit together snugly. The other terms don’t describe this idea: sequencing is about the order of items, order of magnitude is about comparing sizes on a scale, and cardinal numbers relate to counting how many elements are in a set.