[spec] add section on circle mensuration

diff --git a/spec/spec-collated.pdf b/spec/spec-collated.pdf
index 6f36688793e0fcd53aff9fa4782f029198c39614..174123300d682eed2ce36cbdcf45de357ef04085 100644 (file)
Binary files a/spec/spec-collated.pdf and b/spec/spec-collated.pdf differ