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| # | 英语 | 汉语 | |
|---|---|---|---|
| 1 | prism | n. 棱柱：a 3D shape with parallel ends and flat sides | |
| 2 | cylinder | n. 圆柱：a 3D shape with circular ends and a curved side | |
| 3 | cone | n. 圆锥：a 3D shape with a circular base and a point | |
| 4 | pyramid | n. 金字塔：a 3D shape with a polygon base and triangular sides | |
| 5 | sphere | n. 球体：a round 3D shape like a ball | |
| 6 | acute angle | n. 锐角：an angle less than 90 degrees | |
| 7 | right angle | n. 直角：an angle of exactly 90 degrees | |
| 8 | obtuse angle | n. 钝角：an angle more than 90 but less than 180 degrees | |
| 9 | complementary angles | n. 余角：two angles that add up to 90 degrees | |
| 10 | supplementary angles | n. 补角：two angles that add up to 180 degrees | |
| 11 | vertical angles | n. 对顶角：opposite angles formed by two crossing lines | |
| 12 | sector | n. 扇形：a part of a circle between two radii | |
| 13 | parallel lines | n. 平行线：lines that never meet | |
| 14 | alternate | adj. 交替的：every other one in a series | |
| 15 | interior | adj. 内部的：inside something | |
| 16 | quadrilateral | n. 四边形：a shape with four sides | |
| 17 | polygon | n. 多边形：a shape with many straight sides | |
| 18 | pentagon | n. 五边形：a shape with five sides | |
| 19 | hexagon | n. 六边形：a shape with six sides | |
| 20 | dimension | n. 维度：a measurement of size such as length or width |