Regular pyramid 正棱锥
Regular solid/polyhedron 正多面体
Slope 斜率
Sphere
Side 边长
Segment of a circle 弧形
Semicircle 半圆
Solid 立体
Square 正方形,平方
Straight angle 平角
Supplementary angle 补角
Scalene cylinder 斜柱体
Scalene triangle 不等边三角形
Trapezoid 梯形
Volume 体积
Width 宽
Vertical angle 对顶角
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