1.The material is a beech. The angle of both sides is 60 degrees. and,The ratio of the bottom length and the top length is 3:1.

2.Ditch a 60 degree. The bottom of the triangle ditch is the length which is the same as the top side of trapezoid.

3.Sanding.

4.It is beautiful when painting.

My grandchild likes a wooden block. Her idea is abundant.