1. a 之直徑值為何? , L+ e' g" t8 x1 l% W v: H (A) 20.7129 (B) 20.7291 (C) 20.79121 b/ R3 B, {/ b' f
2. b 之半徑值為何?9 b+ H+ N, ?, v+ z
(A) 33.6084 (B) 33.6408 (C) 33.6804
1. 作任一正十邊形#1; U+ e5 J0 d) A1 ~$ X% D T
2. 作A B C D E 五個相切圓5 S8 _! W. r6 p3 Q) Z8 b
3. 過A圓和E圓之圓心作正三角形#28 q5 Z2 c3 o @
4. 以OFFSET →obj=#2 d= A圓半徑 →作偏移三角形#3