a cloud (could vary)
A diamond
something eacual 120 on the 4 times table
A tent...
There are no ordinary household objects shaped like a decagon. Some glasses or vases may be decagonal in shape.
Kites, computer screens, computer keys, and wireless routers are just a few objects shaped like quadrilaterals.
There are few household objects that are shaped like nonagons. Some coins in a few countries are, but even these are rare designs.
Jewelry
Red, and kite-shaped.
book covers, side of a roof of a house, picture frames, steps, striped scarves
Boötes (Bootes) is shaped like a kite.See related link for a pictorial.
something eacual 120 on the 4 times table
Some objects that are shaped like an oval include eggs and footballs.
Boötes is roughly kite shaped.
No, they are typically shaped like diamonds.
A kite.
A tent...
eggs
A sphere.