No.
Yes because you need one plus you see it in a lot of other things like " total" the cereal has it on their box. 52 and 35 are the total %. See what I'm getting at?
No
There are more than 60 possible answers for the acronym. You will need to provide more contextual information.
You need to find perimeter when you buy a house, because then you know where your yard begins and ends.
You need to interpret the words of the sentence into an algebraic form.
The end of a sentence always needs a period.
It is not necessary to put a period after an acronym unless it is part of a title or part of a specific writing style guide that requires it.
No, you do not need to add an additional period at the end of a sentence that already ends with an abbreviation like Oct. The period from the abbreviation serves as the ending punctuation for the sentence.
No, you do not need to add an additional period if "etc." is within parentheses at the end of a sentence. The period that ends the abbreviation "etc." also serves as the sentence-ending punctuation.
If a sentence ends with a.m. or p.m., there is no need for an additional period after the period that is already part of the abbreviation. The period at the end of a.m. or p.m. serves as the ending punctuation for the sentence.
No, you do not need to include an additional punctuation mark at the end of a sentence if the last word already ends in a period.
Because one period is signifying the shortened word (ie Dr.) and the other is just a period for the end of the sentence.
Yes, A period, question mark or exclamation point is the definite end of a sentence. One should always place a period at the end of quotation marks. Hope this helps.
Oh really! That is a declaratory sentence. A declaratory sentence does not need to be long.
You are all I need...all.
No, if "etc." is at the end of a sentence in parentheses, you only need one period. The period in "etc." serves as the punctuation for the abbreviation, and there is no need for an additional period to end the sentence.
a period.. . . . . .