An upside down arch correct. A serrated knife blade correct. A small step stool
page5-164.png page9-4.png page2-32.png
page2-32.png page7-85.png page1-34.png page8-189.png page4-13.png page2-108.png page9-34.png page9-4.png page5-164.png page5-49.png
page5-164.png page9-4.png
No, it is a symmetrical shape