123 d lab

lab1:

1. drawing a circle D=10, mirror circle
2. drawing a loving heart (愛心), circle mirror
3. 做一個鑰匙圈, rectangle 30*20*3, arc r=5 , input Text (high=3), 在一角邊緣 x>3 ,y>3 處,做一 D=3的孔