Right Angle – Definition, Example and Properties What is a right angle? When two straight lines are perpendicular to each other or intersect at 90º, they form a right angle. A right angle is represented by the symbol L. In our daily life we can see many real-life examples of the right angles. We can […]

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All about Subtraction In this section we will learn the basics of subtraction. (-) subtraction is a basic operation of arithmetic. What is Subtraction Subtraction is an operation which is used to find the difference between two numbers. When we have a group of objects(an amount) and we take away few objects (subtract) from it, […]

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Proportion When two ratios or (fractions) are equal, then they are in Proportion. A proportion is an equality of ratios. The symbol “::” or “=” to equal represent the two ratios.                It can be written in two ways 1. Colon form 2. Fractional form The terms a, b, c, […]

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Ratio: Definition – Examples When we compare two quantities or numbers and determine “how many times” first number is of second number.                                      orwe can say how two quantities are compared with each other. Example:  In a class there are 3 boys and 2 girls.      […]

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Intersection of sets  Definition: The ‘Intersection of two sets’ A and B is the set of all elements, which belong to both A and B. or simply,  The ‘Intersection of two sets’ A and B is the set of all elements, which are common in both A and B. Symbol  ‘∩’ is used to denoted the Intersection of two sets […]

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Angle – Definition – Geometry Definition: In plane geometry, angles are formed by two rays or lines called the arms or sides of the angle, sharing a common endpoint, called the vertex of the angle. Angle Symbol An angle is represented by symbol ∠ Angles are measured in degree, which is unit of angle using […]

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Whole numbers – Definition – Symbol and Examples What are Whole Numbers In our number system, various kinds of numbers such as; natural numbers, odd and even numbers, whole numbers, real numbers etc. In 628 A.D., first time the Indian mathematician and astronomer, Brahmagupta invented the number zero. Zero is used as a placeholder, it […]

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