It is hard to claim that pyramid-shaped tea-bags (developed at great expense over four years) have added much to the sum of human happiness.

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Despite some delayering and a lot of guff about horizontal management, most American businesses are still pyramid-shaped: the longer you stay, the higher you rise.

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The wave breaks at the river mouth so you can rinse off in a fresh water pool with a view of light green pyramid-shaped mountains in the valley.

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Populations in the West and Japan are no longer pyramid-shaped as they used to be, with a big base of younger people and few pensioners at the top.

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Some 57 years later he wistfully remembered the regret at leaving the eternal snows of the Jungfrau and the sharp outline of the pyramid-shaped Silberhorn peak against the dark blue of the sky.

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Waterwood Estate, a modern marvel of architecture, was laid out on 160 acres by its late inventor owner using 20 concrete pods sporting pyramid-shaped slate roofs that connect by glass corridors.

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