# PECE Math Note from Chapter twelve to Chapter fourteenth

PECE Math Note from Chapter twelve to Chapter fourteenth. In the previous class, there are discussions about triangle and quadrilateral When we were drawing to draw the triangle, we need three measurements to draw a specific triangle. Naturally, the question arises to draw a quadrilateral is not enough to measure four. This chapter will be discussed in the current chapter. Besides, there are different types of quadrilateral such as parallel, rectangle, square, and rhombus. In this chapter, there will be discussions about these characteristics and quadrilaterals of different quadrilaterals

**PECE Math Note from Chapter twelve to Chapter fourteenth**

The quadrilateral is divided into two triangle lines with a quadrilateral. Therefore, the area of the quadrilateral is equal to the sum of the area of the triangle. In the previous class, we learned to calculate the area of the square and rectangle. Again, the land and height of the rectangles and parallels are the same, but the areas of the given fields are equal. Below you will discuss the area of the rhombus and the topic area.

Multiple sets of connection sets, intersections can be set and interpreted. With the help of illustrations and examples, it is able to verify and prove the simple principles of the set process. Applying the set principles can solve the problem.

The gathering of the well-defined object of real or thought is called set. Examples of the well-defined set of first five letters of English alphabet, countries of Asia continent, natural numbers, etc. No member is under consideration. There is no specific set which is not included in the set. Repeat the members of the set and No order The set element for each member of the set. (Businessman) It is said. The set is usually the uppercase of the English alphabet.

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