polyhedron
Произношение: [ˌpɒlɪˈhɛdrən]
Слово
Контекст: «geometry»
(noun) a three-dimensional shape that has flat surfaces, which are called faces. Each face is a polygon, like a triangle or square. Think of it as a solid that you can hold in your hands, like a box or a pyramid.
Пример
A cube is a common example of a polyhedron because it has six flat square faces.
Пример
A ball is not a polyhedron because it is not made of flat surfaces.
Пример
Can you name some polyhedrons that we see in everyday life?
Контекст: «mathematics»
(noun) a solid figure with a specific number of sides, edges, and vertices. It's important in math because it helps us understand shapes in 3D space. You can use it to study how shapes look and behave.
Пример
In our math class, we learned that a tetrahedron is a type of polyhedron with four triangular faces.
Пример
A circle is not a polyhedron as it does not have flat surfaces or angles.
Пример
How many faces does a specific polyhedron have?
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