Question 1182441
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After the first reading, it becomes clear that you are UNFAMILIAR with the rules on how to present and to formulate Math problems.


If you describe elements (sides) of a trapezoid, you MUST say which side is a base and which is a lateral side.


You SHOULD NOT leave these facts to the reader for his or her guessing.



Following certain rules in Math writing is the form of Mathematical politeness.



The only way to learn on how to formulate Math problem is to read from good sources (first and foremost, from textbooks).