把一元二次方程同几何问题结合在一起，构成了丰富多采的综合题．这类综合题常在中考试卷中出现．解这类题，既要运用一元二次方程的有关知识．又要注意见何图形的性质．本文将对它的类型和解法分析作一些介绍．一、求作以两线段为根的方程例1已知：如图1．C”是以AB为直径的半 Combining the unary quadratic equations with geometric problems, constitutes a rich and comprehensive synthesis of questions. Such comprehensive questions often appear in the examination paper. To solve such problems, we must use the relevant knowledge of the quadratic equation. Also pay attention to the nature of what graphics. This article will give some introduction to its type and solution analysis. First, find the equation with the two line segments as the root. Example 1 is known: Figure 1. C" is the half diameter of AB