Understanding Quadrilaterals Class 8 Maths Formulas

Hey, students are you looking for Quadrilaterals Class 8 Maths Formulas? If yes. Then you are at the right place. In this post, I have listed all the formulas of Quadrilaterals class 8 that you can use to learn and understand the concepts easily.

If you want to improve your class 8 Math, Quadrilaterals concepts, then it is super important for you to learn and understand all the formulas.

By using these formulas you will learn about Quadrilaterals.

With the help of these formulas, you can revise the entire chapter easily.

Understanding Quadrilaterals Class 8 Maths Formulas

Polygon: A polygon is a closed figure bounded by three or more line segments such that each line segment intersects exactly two other points (vertices) as shown in the following figures.

Quadrilateral: A simple closed figure bounded by four line segments is called a quadrilateral, it has four sides, i.e., AB, BC, CD and AD and four vertices as A, B, C and D and the sum of all angles of a quadrilateral is 360°.

Parallelogram: A quadrilateral in which opposite sides are parallel and equal is called parallelogram; written as || gm. and the diagonals of a parallelogram bisect each other.

Properties of parallelogram:

• Opposite angles are equal.
• Diagonals bisect each other.
• Opposite sides are equal and parallel.

Curve: A figure formed on a plane surface by joining a number of points without lifting a pencil is called a curve.

Open Curve: A curve which does not end at the same starting point or which does not cut itself is called an open curve.

Closed Curve: A curve which cut itself or which starts and ends at the same point is called a closed curve.

Simple Closed Curve: A closed curve called a simple closed curve which does not intersect itself.

Rectangle: A parallelogram each of whose angle is 90° and diagonals are equal, is called a rectangle.

Properties:

• Opposite sides are equal and parallel.
• Each angle is a right angle.
• Diagonals are equal.
• Diagonals bisect each other.

Square: A quadrilateral in which all sides and angles are equal, is called a square.

Rhombus: A parallelogram having all its sides equal, is called a rhombus.

Trapezium: A quadrilateral in which two opposite sides are parallel and the other two opposite sides are non-parallel, is called a trapezium. If two non-parallel sides of a trapezium are equal, then it is called an isosceles trapezium.

Also Read,

Download NCERT Class 8 Maths Book in PDF 

Download NCERT Class 8 Science Book in PDF

Download NCERT Class 8 Science Exemplar in PDF

Download NCERT Class 8 Maths Exemplar in PDF

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