Evenwijdige rechten:
https://www.youtube.com/watch?v=WG1qz9wzPIo
https://www.youtube.com/watch?v=jEdZX-R11ak
https://www.youtube.com/watch?v=LDMv0Zgfzg8
https://www.youtube.com/watch?v=iXfu_IiV_O4
https://www.youtube.com/watch?v=VmjTKxt3lOs
Loodrechten:
https://www.youtube.com/watch?v=hW-H2BPzaWI
https://www.youtube.com/watch?v=WnDFXhsxYQA
https://www.youtube.com/watch?v=V1WrqGTnZCU
Evenwijdige en loodrechte lijnen tekenen
https://www.youtube.com/watch?v=JKvpZX5vWfU
