Similar Polygons Two polygons are similar if they have same shape, but not the same size. Similar polygons are polygons, if their corresponding angles are congruent, and the measure of their corresponding sides are proportional. The ratio of length of their corresponding sides are all in a constant ratio, and their corresponding angles are equal. […]
Read More →Regular polygon A polygon which has all sides are congruent(equal) and all angles are congruent (equal) is known as a regular polygon. If a triangle has all the sides are same and all the angles are same then it is a equilateral triangle or a regular triangle. If a quadrilateral has all the sides are same […]
Read More →Subset Find the subsets of the following sets. (i) {a}, (ii) {a, b}, (iii) {a, b, c}, (iv) {p, q}, (v) {p, q, r}, (vi) {1,}, (vii) {1, 2, }, (viii) {1, 2, 3}, (ix) {1, 2, 3, 4}, Answer: (i) {a}, ∅ (ii) {a}, {b}, {a, b}, ∅ (iii) {a} , {b}, {c}, {a, […]
Read More →1. If U is the set of natural numbers. Find the complements of the following sets. (i) {x : x is an odd natural number} (ii) {x : x is an even natural number} (iii) {x : x is a prime number} (iv){x : x is a perfect square} (v){x : x is a perfect […]
Read More →Polygons – Classification We classify polygons to the number of side orvertices based they have. A polygon can be classified by it’s number of a sides and measure of angles. First, we classify by it’s number of a sides. Classified by measuring the sides The name of a polygon usually […]
Read More →Power Set – Definition – Examples Definition: The Collection of all Subsets of a Given Set, is known as ‘Power Set’. Power set of any set S is the set, of all subsets of S, including the empty set and set S itself. Power […]
Read More →Cross multiplication – Examples and Formula In this lesson we will learn about cross multiplication, and also learn in brief how to useful cross multiplication to solve the problems. To understand the cross multiplication first we see the parts of a fraction. Parts of a fraction We know that a fraction has a division bar and two numbers. […]
Read More →Algebra Algebra is a branch of mathematics that help us in the representation of problems or situations in the form of mathematical expressions. All the branches of mathematics such as trigonometry, calculus, and coordinate geometry, involve the use of algebra. Algebra encompasses a wide range of topics, including solving equations, understanding functions, and working with […]
Read More →Interior & Exterior angle of a polygon In this lesson we will learn the, (1) Solutions of problems on interior and exterior angles of a polygon. Example 1: Find the sum of all interior angles in a regular triangle (3-sided). Solution: Step 1: Write the formula Sum of interior angles of a polygon = (n-2) […]
Read More →Order of mathematical Operations The four basic operation in mathematics, as everyone knows, are addition, subtraction, multiplication and division. These basic operations are used in algebra with numbers or letters or combination of both. A number multiplied by a variable, a number or variable is called a term. An expression is combination of such terms. Example: In […]
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