## Geometry basic concepts Part 2, Quadrilaterals Polygons Squares

Quadrilateral basic Concepts: Properties of a quadrilateral, polygons, squares, parallelograms, rhombus, cyclic quadrilateral with examples and exercise.

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Basic concepts on a subject form the foundation. Basics are for building the foundational concepts in concise but comprehensive manner.

In work life and personal life often we need to learn the basics on a subject quickly. Usually it is not easy to acquire the basic concepts on any subject reliably in a short time from a concise material.

Basic concepts on any subject form the foundation, but generally we have found it is not easy to build it in a short time. Our focus here is on **base concepts** in a concise form that can be learned quickly and be used as a launch pad for further learning and subject specific problem solving.

Often we added a **rich concept layer** derived from the base concepts that helps to solve more complex problems with great ease. For us, it is a two layer concept model: Base concepts and Rich concepts derived from base concepts. Objective is efficient problem solving.

* Basic maths:* Basic concepts on maths. The content is primarily targeted for competitive test requirements.

* Reasoning and logic analysis:* Tutorials, problems and puzzles on competitive test reasoning and logic analysis.

Submitted by Atanu Chaudhuri on Sun, 22/05/2016 - 23:03

Quadrilateral basic Concepts: Properties of a quadrilateral, polygons, squares, parallelograms, rhombus, cyclic quadrilateral with examples and exercise.

Submitted by Atanu Chaudhuri on Fri, 20/05/2016 - 19:46

Geometry basics points lines and triangles: Straight lines, parallel lines, angles, triangles, properties of triangles with examples and exercise.

Submitted by Atanu Chaudhuri on Wed, 18/05/2016 - 14:58

Fractions decimals basic concepts, arithmetic operations on fractions, conversion of fraction to decimal, rational irrational numbers, surds and more.

Submitted by Atanu Chaudhuri on Thu, 14/04/2016 - 08:30

Highest Common Factor or HCF is the largest factor that divides two or more numbers under consideration. It is the largest among all the factors common to the set of numbers under consideration. The LCM is the smallest number that is divisible by the set of given numbers. In other words, LCM is the least common multiple of the set of given numbers...

Submitted by Atanu Chaudhuri on Sat, 02/04/2016 - 10:52

Algebra concepts and techniques for solving SSC Questions is a comprehensive collection of techniques for SSC algebra problem solving in a few steps. These are invaluable for solving Algebra questions in SSC CGL or SSC CHSL.

Submitted by Atanu Chaudhuri on Tue, 18/11/2014 - 02:10

Permutation and combination deal with choice and arrangement of a set of objects out of a second set of objects. Permutation deals with such questions as, how many ways can the three letters a, b and c be arranged? In each such permutation or arrangement, ordering is important. On the other hand, Combination deals with such questions as, how many ways can you choose a captain and vice-captain out of a cricket team of 11 players? In a combination, ordering of the elements chosen is not important...

Submitted by Atanu Chaudhuri on Sun, 09/11/2014 - 11:53

Break up a number into its factors, just as you break up a complex problem into its component simpler sub-problems. Factorization is one of the most basic operations and is used extensively in other more important problem areas of HCF and LCM...

Submitted by Atanu Chaudhuri on Tue, 28/10/2014 - 01:58

Numbers and arithmetic operations. Number system concepts and methods for solving number problems in competitive exams explained on test example problems. Exercise problems with answers for practice.