Question

consider the beginning stages of a construction shown in the diagram. which geometrical object(s) could be in the beginning stages of being constructed? angle bisector congruent segments midpoint perpendicular lines

Explanation:

从图中看，仅展示了一个角的两条射线，在角平分的构造开始阶段会有这样的图形，而构造全等线段、中点、垂直线开始阶段图形与此不同。

Answer:

angle bisector