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08/28/2020
Definition of Mean
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the total number of values in that set.
Definition of Median
A Median is a mid value in data set is in ascending or descending order.
Definition of Mode
The mode is the number in data set that occurs most often times in that set.
08/15/2020
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New quiz have been published on website go and enjoy the quiz.
Topics GETTING SQUARE WITH NUMBER ENDING WITH FIVE
How good you are in calculation | Aptitude | Reasoning | Free online Quiz Math quiz helps us to increase our knowledge. Online math quizzes will take 5 minutes of your time to complete a set of questions on math test quiz which will ...
08/12/2020
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Ramanujan Summation
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Ramanujan Summation | Summation of all positive number In this video we will discuss about RamanujanSummation. It states that total sum of all positive integers till infinity is minus one over twelve or -0.083333...
07/13/2020
Trigonometry formulas for class 9th 10th 11th 12th PDF Download You can visit our website for full article and to download pdf.
for class 9th 10th 11th 12th
https://www.mathexame.online/2020/07/Trigonometry-formulas-for-class-9th-10th-11th-12th-PDF.html?m=1
07/03/2020
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07/03/2020
How to calculate diagonals of polygon by MathExame
Definition of diagonal:
A diagonal is a inclined line segment joining two angle of a polygon or polyhedra from inside.
Example:
In the following polygon image all colourful lines are diagonals.
For calculating diagonals of polygon we have to count the number of side.
Polygon
Polygon
Number of sides of polygon, n = 6
Formula for calculating diagonals of polygon , D= [n(n-3)]÷2
Putting n= 6 in step 2
D= [6(6-3)]÷2
D= [6×3]÷2
D= 18÷2
D= 9
Answer so above image have 9 diagonals.
Explanation of formula:-
Let's take an example n-sided polygon will have n vertices, and from each vertex you can draw n-3 diagonals, because you can't draw a diagonals right left and on that point you're starting. So the total number of diagonals that can be drawn is n(n-3).
This would mean that each diagonal would be drawn twice, (to and from each vertex), so the expression must be divided by 2.
