Level 2
6 words 0 ignored
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perimedr
pellter o amgylch siâp
cylchyn
llinell sy'n ffurfio cylch
radiws
pellter o ganol cylch i'r cylchyn
cord
llinell syth sy'n cysylltu dau bwynt ar gylch
diamedr
cord trwy ganol cylch
cylchedd cylch
π×diamedr
