arclenexp2d:ʽ̵Ļ 2D
arclenparm2d:̵Ļ 2D
ccrossarea:ཻߵ
circdist:Բ
cubicarea:
eclipse:ʳ
lenpolclose:յļ곤
lenpolopen:ļ곤
lenpolspiral:߼곤
logarea:֪
parabary:
pararea:
pararea2: II
parcirc:ԲΧɵ
qcrossarea:Χɵ
quadarea:֪ *
reservoir:ˮ
suprevx:ת
volrevx:ת
