Keywords: median proportion
Geometric meaning
primary school
mathematics
plane geometry
Keywords: Bi Li Hongxiang
Ji he yi yi
Chuzhong
Shu Xue
Plane set
Source:
Knowledge dictionary
Journal Name: Math World: 12 Grade Counseling (ShuXueDaShiJie:ChuYiErFuDao)
International standard serial number: 1009-5608
Domestic uniform serial number: 22- 1253/O 1
Classification number: G633.63
The geometric meaning of items in proportion in current textbooks is defined as follows: "Given four line segments A, B, C and D, if A: B = C: D, then A, B, C and D are called items that make up the proportion, and line segments B and C are called items within the proportion. If there are two identical line segments as items in the proportion, that is, a/b=b/c, it is called line segment B..