以72°角为例 ' d( H0 t7 }4 v f; q) fCommand: a , j8 ?5 @+ q0 n9 TARC Specify start point of arc or [Center]:& L1 I4 T% V/ x j6 p
Specify second point of arc or [Center/End]: e 9 n- D6 K% C; ~" I- b+ f! f2 `4 G" r% r) ]* R
Specify end point of arc:' E/ N+ j7 \- t( Y$ e1 z
Specify center point of arc or [Angle/Direction/Radius]: a/ @# p+ j4 ~* @/ d* v: d
Specify included angle: 216 2 [6 f" x0 d* b) B- u% u5 |+ M0 p$ ?! D0 \& q9 H N. E/ G `
(360 - 72 * 2 = 216)