Subjects tell the listener and the reader whom or what the sentence is about. The subject is that part of a sentence which names a person, thing, or idea. e.g. Every complete subject contains a simple subject. The simple subject, which is a noun or pronoun, is the most important word in the complete subject.
The USPS considers a postcard to be any single rectangular piece of paper that is at least 3 1/2 inches high by 5 inches long by 0.007 inch thick' and no more than 4-1/4 inches high by 6 inches long by 0.016 inches thick.. The post office considers all papers outside of these dimensions to be letters.
Half-fold postcard sizes: 8.5 x 6 (folds to 4.25â x 6â), 10 x 7 (folds to 5â x 7â), 11 x 8.5 (folds to 5.5â x 8.5â), 12 x 9 (folds to 6â x 9â), 12 x 11 (folds to 6â x 11â). Tri-fold postcard sizes: 12.75 x 6 (folds to 4.25â x 6â), 15 x 7 (folds to 5â x 7â), and 16.5 x 8.5 (folds to 5.5â x 8.5â).