Complete the tasks: fill in the gaps, answer the questions and enrich your advanced vocabulary on shapes.

Why are most manhole covers round? Sure it makes them easy to roll, and slide into place in any alignment. But there’s another, more compelling reason, involving a peculiar geometric property of circles and other shapes. Marc Chamberland explains curves of constant width and Barbier’s theorem.

Why Are Manhole Covers Round

why-are-manhole-covers-round

Let's do English ESL general vocabulary practice. Complete the tasks: fill in the gaps, answer the questions and enrich your advanced vocabulary on shapes.