问题及解答

本类别（初等几何）中许多题目参考自

PROBLEMS IN PLANE AND SOLID GEOMETRY
v.1 Plane Geometry
Viktor Prasolov
translated and edited by Dimitry Leites

e.math.hr/afine/planegeo.pdf

恕不一一指明. 很多图采用 GeoGebra 绘制.