一、目标指引1.理解椭圆(中心在坐标原点)、抛物线(顶点在坐标原点)的标准方程和几何性质(范围、对称性、顶点、准线和离心率),了解双曲线(中心在坐标原点)的标准方程和几何性质(范围、对称性、顶点、离心率、准线和渐近线); First, the goal guide 1. Understand the ellipse (center in the origin of the coordinates), the parabolic (the vertex in the origin of the coordinates) of the standard equations and geometric properties (range, symmetry, vertices, alignment and eccentricity), understand the hyperbola (center in the coordinates The standard equations and geometric properties of the origin) (range, symmetry, apex, eccentricity, alignment, and asymptote);