What would be the right answer since im stupid

I say:
A tetrahedron is a pyramid with a *triangular* base

She says: A tetrahedron is a pyramid with a *triangle* base

and also (since im stupid again) would it be right if I said The coordinate plane is divided into four *quadrant*

cuz I think it would be better if I added an s

How might an author with the opposite attitude rephrase the following sentence? this historic building is a local treasure, with a distinctive exterior and many antiques and fascinating artwork on the inside. choose the correct answer from the following choices, and then select the submit answer button. it's a shame this old building hasn't been torn down yet: its ugly design makes it an eyesore, and it is full of rickety furniture and dusty paintings. this building was built over 100 years ago and features a design not seen on many other buildings of the era as well as a large collection of furniture and art. the old man running the antiques shop watched the kids with suspicion, worrying they would not handle his fragile merchandise with proper care. it is vital that we preserve the history of our town by taking care of buildings like this one, with its interesting design and outstanding collection of art and furniture.

The overwhelming majority of the peoples and nations of the world today want to live in peace

Active reading to kill a mockingbird, twelve through twenty-one during the trial, atticus questions four witnesses. as you read, complete the chart below by noting the key information given by each witness during questioning. also note how each witness behaves on the stand, commenting on the general impression the witness makes. answer for the following characters: the sheriff, bob ewell, miss ewell, and tom robinson.