中英文版(國二數學) 平行線與截角性質：平行線的尺規作圖
國中_數學_16-1-2 平行線的尺規作圖
https://www.youtube.com/watch?v=XQZpaa0sB5E
國中第四冊-尺規作圖試看
https://www.youtube.com/watch?v=e1SEiq-jqng
國中_數學_幾何的基本元素II-2
https://www.youtube.com/watch?v=dJNP_PcU-XY
國中_數學_平行線的製作
https://www.youtube.com/watch?v=dVJhqTVqzkY
https://www.youtube.com/watch?v=ZuCwnmbhvoA
https://www.youtube.com/watch?v=mwATGUNJJNY
https://www.youtube.com/watch?v=6fu2FLSSnj4
https://www.youtube.com/watch?v=JpOTK3s_WPg
兩平行線作圖
https://www.youtube.com/watch?v=3Mz-xc3DbPw
Constructing a Parallel Line Through a Given Point 128-2.21
https://www.youtube.com/watch?v=im81vHIhZS8
Parallel Lines Construction
https://www.youtube.com/watch?v=EKL_3xppHcQ
How to draw a parallel line through a given point
https://www.youtube.com/watch?v=PCdaktSB6NY
How to Construct Parallel Lines: Demonstration
https://www.youtube.com/watch?v=9JDtwQChx6A
How to Construct Parallel Lines: Demonstration (Step-by-Step)
https://www.youtube.com/watch?v=qcktB5gRVS8
Construct Parallel Lines using Perpendiculars
https://www.youtube.com/watch?v=S_npKZ6u1hc
部分資料來源: 學習吧
https://www.learnmode.net/knowledge/version?p=36#focus
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