straight shapes . - SC Xm in Mole r Z O E P . . . ← >c p I f Z f → r ' f - plane co D of 1012 I Surface L : ds = Rdddz P . ¥ Z 7 x y = = tz cos @ , rising ) " ' t b' = RI Gi id - cos d) es r , ' , = see +5 ; r2 2 = r 2) j % - - ton 4 ① = ar D= are tongue ) D= ¢ 2- = r cost + z2 ra IS = rd -0 dv ds = d led lad r - resin -00 Edd R r 313 lo y 217×2 = ① Sphere = > x r sin -0dg : Esv ; x - F " da -_e If We >c = r Use V 3 sin -0 easel 3×3 matrix = Our Hwa has two) x J { i ) in poler - ds = rdrd -0 , word . dr O 05 "