regular pyramid
- noun
- /ˈrɛɡjələr ˈpɪrəmɪd/
- Specialized
:
pirámide regular
- A regular pyramid has congruent triangular faces that meet at a single apex.
Examples
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In geometry class, we learned how to calculate the volume of a regular pyramid.
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Many architects prefer using a regular pyramid design.
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The ancient Egyptians did not build regular pyramids because their bases were not always perfect polygons.
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The regular pyramid has a square base.
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In geometry class, we learned how to calculate the volume of a regular pyramid.
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A regular pyramid has congruent triangular faces that meet at a single apex.
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Many architects prefer using a regular pyramid design due to its aesthetic appeal.
Synonyms
27
2.7
A solid shape with a many-sided base and triangular faces that meet at one point
Surface Forms
Morphology
The phrase 'regular pyramid' is transparently compositional: the adjective 'regular' (showing symmetry/equal spacing) simply modifies 'pyramid' (a solid with a polygonal base and triangular faces), so the meaning — a pyramid with a regular polygon base and symmetric lateral faces — is directly derivable from the parts. This follows a standard adjective+noun pattern found across languages, so a B1 learner who knows both words should understand it.
Etymology
Regular pyramid describes a pyramid whose base is regular, meaning all sides are equal, and whose tip sits right above the center, so every side triangle is the same. So it means 'a pyramid with equal base sides and matching triangular faces'.