Concave Polygons: Definition – Examples & Properties   All polygons is either convex or concave. A polygon will be convex or concave, it depends on the measure of their angles. What is a Concave Polygon? A concave polygon have at least four sides, and concave polygon is just opposite of a convex polygon. If the measures […]

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Arc – Geometry  In mathematics the word arc also used for some other curved shapes like an ellipse but mostly used for a circle. Definition:                    An arc is a portion of the circumference of a circle. It is also known as circular arc. In above figure AB […]

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Classification of polynomials  1. Zero degree polynomials are used to describe quantities that don’t change. 2. 1st degree polynomials are used to describe quantities that change at a steady rate. They are also used in many one-dimensional geometry problems involving length. 3. 2nd degree polynomials are used to describe quantities that change with some amount […]

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   Type of Polygons Definition A polygon is a two-dimensional shape form with more than three straight lines. In a polygon each side must be intersect exactly two other sides, but only at their end points and have a common endpoint. The sides have must noncollinear. The name of a polygon usually depends on how […]

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Converse of Pythagorean Theorem  In this section we are going to see the converse of Pythagorean theorem. We know the Pythagorean theorem applies to right triangles and states that,  The square of the length of the hypotenuse, equals the sum of the squares of the lengths of the other two sides.  (hypotenuse)2 = (Base)2+(Perpendicular)2     […]

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Law of Tangents – Definition – Formula – Proof and Examples In trigonometry, the law of tangents describes the relationship between the sum and difference of sides of a right triangle and tangents of half of the sum and difference of the angles opposite to the sides. Formulas for law of tangents The law of tangents […]

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             Type of Bar Graphs  In this lesson, we will learn about bar graph or bar chart. We also focus on the different type of bar graphs, definition of bar graph how to create bar graphs. A graphical representation of data, in which bars show comparisons between categories of data.A […]

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Perimeter of shapes Definition:  The distance that surrounds a two dimensional shape is known as “Perimeter.”   Simply, we can say that ‘The Perimeter is the length of the outline of a shape.  In the below figure if we start measure from the point A and move along the line segments and reach again the point A.We have […]

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Bar Graph  Problems and Solutions Example: (1) Favourite colour of 200 students of a class are given in the below table.  Answer the following questions with the help of the bar graph. (1) Which is the most preferred colour and which is the least preferred?(2) How many students preferred red colour? Solution: First we choose a suitable […]

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Pie Graph or Pie Chart – Definition and Examples   Pie Graph (Pie Chart) Definition:  A “pie graph or (pie chart)” is a circular chart divided into sectors, each sector represents a proportionate part of a whole. A pie graph is used to compare parts of a whole. The circle represent the whole. Sector: In a pie graph, the […]

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