a rectangular shape is formed when there's no topic sentence in the paragraph
what shape is A paragraph whose topic sentence comes in mid-paragraph
A polygon presumably
im taking a test on it right now and i think the answer ins dimond
I don't know. Lol
A topic sentence is the main concept of your writing, it can be used anywhere within a paragraph. If used at the start of a paragraph it gives general idea of the writing. If used in the intermediate section of the paragraph it lets you shape an idea and then build upon it. If used at the end of a paragraph it lets you conclude with your final idea.