填空题 Analytic geometry is the 1of algebra with geometry. Geometric objects such as conic sections, planes and spheres are studied by the means of algebraic equations. Vectors in Cartesian, polar and spherical coordinates are introduced.(marry)
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【正确答案】 1、正确答案：marriage    
【答案解析】解析：句意：解析几何是代数与几何的结合。诸如圆锥截面、平面、半球之类的几何物体可以通过代数式来研究，这其中引入了几何向量、极坐标、球面坐标等概念。此处需要一个名词，marry的名词形式marriage：密切结合，合并。