1. Guide baby to correctly know various geometries such as triangle, hemicycle , rectangle etc.

2. Have a square, rectangle, hemicycle , triangle, Wujuexing, 1/4 circular shape structure and ablution rooms.

3. Guide baby to correctly know various geometries such as triangle, hemicycle , rectangle etc. Train baby"s ability of practice and thought;"

4. Points : Do not joined completed posture chest, arm as a whole to maintain hemicycle ,[Sentence dictionary] the left knee Weiqu.

5. The round, arch wall and hemicycle were with the obvious stress concentration at the top of chamber, close to point of concentration.

6. L-type : kitchen ware designed a corner configuration operations moving lines shorter or open space suitable for all kinds of open, hemicycle control desk can be used for eating.

7. The utility model is characterized in that the mouth of the inner bin is provided with a low steps. Two hemicycle metal strips is running fitted at the mouth and can be tightly sleeved on the steps.