angle
the space between two lines or surfaces that are joined, measured in degrees or radians
角度
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登录symmetry
the quality of having two halves that are exactly the same, which are separated by an axis
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登录solid
(geometry) a shape that is not two-dimensional because it has height, width, and length
[名词]
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登录rectangle
(geometry) a flat shape with four right angles, especially one with opposing sides that are equal and parallel to each other
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登录sphere
(geometry) a round object that every point on its surface has the same distance from its center
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登录pyramid
a solid object with a square base and four triangular sides joined to a point on the top
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