A dodecagonal number is a figurate number that represents a dodecagon. The dodecagonal number for n is given by the formula The first few dodecagonal numbers are: 0, 1, 12, 33, 64, 105, 156, 217, 288, 369, 460, 561, 672, 793, 924, 1065, 1216, 1377, 1548, 1729, 1920, 2121, 2332, 2553, 2784, 3025, 3276, 3537, 3808, 4089, 4380, 4681, 4992, 5313, 5644, 5985, 6336, 6697, 7068, 7449, 7840, 8241, 8652, 9073, 9504, 9945 ... (sequence in the OEIS) (Wikipedia).
Polygonal Numbers - Geometric Approach & Fermat's Polygonal Number Theorem
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From playlist â„•umber Theory
#MegaFavNumbers - 7,588,043,387,109,376 by Egi
87,109,376^2=7,588,043,387,109,376. The last 8 digits is the square root😀, it's called an automorphic number which n^2 ends with n
From playlist MegaFavNumbers
Squaring Numbers with Digits of 1
#shorts This video shows a pattern when squaring number with digits of 1.
From playlist Math Shorts
Visualizing decimal numbers and their arithmetic 67 | Arithmetic and Geometry Math Foundations
This video gives a precise definition of a decimal number as a special kind of rational number; one for which there is an expression a/b where a and b are integers, with b a power of ten. For such a number we can extend the Hindu-Arabic notation for integers by introducing the decimal form
From playlist Math Foundations
In this video, you’ll learn more about decimals. Visit https://www.gcflearnfree.org/decimals/ for our interactive text-based tutorial. This video includes information on: • Reading decimals • Comparing decimals We hope you enjoy!
From playlist Math Basics
How to find the individual measurement of an interior angle for a regular dodecagon
👉 Learn how to determine the measure of the interior angles of a regular polygon. A polygon is a plane shape bounded by a finite chain of straight lines. A regular polygon is a polygon whose sides are congruent (equal). The interior angle of a polygon is the angle between two sides of the
From playlist One Interior Angle of a Polygon
My second entry for the 3Blue1Brown Summer of Math Exposition Contest
In this video I am explaining what I believe to be the logic behind the design of the Western Arabic Numerals. I believe they were designed by someone using base twelve geometry, and in this video I show the logic that was used in their creation.
From playlist Summer of Math Exposition Youtube Videos
Python Programming 10. The Python Turtle Part 2
This is the tenth in a course of computer science video lessons introducing programming with Python. This video shows how the Python Turtle library, which allows you to draw, can be combined with other programming constructs such as selection with if blocks and iteration with while loops.
From playlist Python Programming Step by Step
Find the Measure of the Angle of a Regular Dodecagon
Find the Measure of the Angle of a Regular Dodecagon If you enjoyed this video please consider liking, sharing, and subscribing. Udemy Courses Via My Website: https://mathsorcerer.com My FaceBook Page: https://www.facebook.com/themathsorcerer There are several ways that you can help su
From playlist Polygons
This video covers the divisibility rules for 2,3,4,5,6,8,9,and 10. http://mathispower4u.yolasite.com/
From playlist Factors, Prime Factors, and Least Common Factors
A Tough Geometry Question that Teachers Love to Ask (Non-Calculator!!) | Can You Solve It?
Can You Solve This? Videos to watch to help with this question: Exact Trigonometric Values - https://youtu.be/wBX0YXKThBs Pythagoras Theorem - https://youtu.be/JCG4HHGVqiY Area of a Triangle Using Sine - https://youtu.be/8fzPUPnFy-w These are the calculators that I recommend 💎 Casio
From playlist Can You Solve This? | Grade 9 Extension Playlist
Find the Sum of the Angles of a Dodecagon
Find the Sum of the Angles of a Dodecagon If you enjoyed this video please consider liking, sharing, and subscribing. Udemy Courses Via My Website: https://mathsorcerer.com My FaceBook Page: https://www.facebook.com/themathsorcerer There are several ways that you can help support my ch
From playlist Polygons
Interior and Exterior Angles of Polygons (Formulas)
Learn how to find interior and exterior angles in polygons as well as in regular polygons in this video math tutorial by Mario's Math Tutoring. We discuss 4 formulas in this video as well as go through 6 example problems (3 of which are word problems). Related Videos to Help You Succee
From playlist Geometry
Polygons - Exam Walkthrough - GCSE Maths - Summer School - Onmaths
JOIN the higher summer school now at onmaths.com! Each weekday we will go through each of the many GCSE Maths topics that you will face on your exam. We pick the best questions from Edexcel, AQA and OCR papers and give you a full walkthrough of how to answer them so you will be ready fo
From playlist HIGHER Summer School
Ex 2: Determine What Two Decimals a Given Number is Between
This video provides and example of how to determine what a given number is between to specific place value Library: http://mathispower4u.com Search: http://mathispower4u.wordpress.com
From playlist Introduction to Decimals
MegaFavNumbers | 8.07x10^67 vs. 137,327,459,106,673,000,000,000,000,000,000,000,000,000,000,000,000
This video compares the number of ways to shuffle a deck of cards to the number of atoms on Earth. #MegaFavNumbers 80,658,175,170,943,878,571,660,636,856,403,766,975,289,505,440,883,277,824,000,000,000,000 vs 137,327,459,106,673,000,000,000,000,000,000,000,000,000,000,000,000.00
From playlist MegaFavNumbers
Area of dodecagon from a square!
This is a short, animated visual proof demonstrating that the area of a regular dodecagon inscribed in the unit circle has an area of exactly 3. #math​ #manim​ #visualproof​ #mathvideo​ #geometry #mathshorts​ #geometry #mtbos​ #animation​ #theorem​ #pww​ #proofwithoutwords​ #proof​ #it
From playlist MathShorts
Area of a Regular Dodecagon II (visual proof)
This is a short, animated visual proof demonstrating that the area of a regular dodecagon inscribed in the unit circle has an area of exactly 3. #math​ #manim​ #visualproof​ #mathvideo​ #geometry #mathshorts​ #geometry #mtbos​ #animation​ #theorem​ #pww​ #proofwithoutwords​ #proof​ #it
From playlist Proofs Without Words