"The History of Gothic Arches." YouTube, uploaded by MWG Studios, 18 Apr. 2013,
https://www.youtube.com/watch?v=SJsqcet_0mo.
"Medieval Math: How to Create a Gothic Arch With a String." YouTube, uploaded by
Medieval DIY, 23 Jul. 2019, https://www.youtube.com/watch?
v=y6qE3mC5d4o&t=93s.
"The Gothic Arch." YouTube, uploaded by Suzanne Delahanty, 14 No. 2013,
https://www.youtube.com/watch?v=NvtYLOWRVFI.
"How to Lay Bricks: Gothic Arch." YouTube, uploaded by Rodian Builds, 4 Sept. 2019,
https://www.youtube.com/watch?v=pgQ6V9GXL3A.
"Building a Gothic Arch Greenhouse Part 1." YouTube, uploaded by Benni Goes,
10 Dec. 2017, https://www.youtube.com/watch?v=tNR0wL6-lB8.