In geometry, a 9-cube is a nine-dimensional hypercube with 512 vertices, 2304 edges, 4608 square faces, 5376 cubic cells, 4032 tesseract 4-faces, 2016 5-cube 5-faces, 672 6-cube 6-faces, 144 7-cube 7-faces, and 18 8-cube 8-faces. It can be named by its Schläfli symbol {4,37}, being composed of three 8-cubes around each 7-face. It is also called an enneract, a portmanteau of tesseract (the 4-cube) and enne for nine (dimensions) in Greek. It can also be called a regular octadeca-9-tope or octadecayotton, as a nine-dimensional polytope constructed with 18 regular facets. It is a part of an infinite family of polytopes, called hypercubes. The dual of a 9-cube can be called a 9-orthoplex, and is a part of the infinite family of cross-polytopes. (Wikipedia).

Calculating the side of a square that is resting inside a cube.

From playlist Middle School - Worked Examples

playlist: http://www.youtube.com/view_play_list?p=8E39E839B4C6B1DE

From playlist Common Core Standards - 6th Grade

Illustrative Mathematics Grade 6 - Unit 1- Lesson 17

Illustrative Mathematics Grade 6 - Unit 1- Lesson 17 Open Up Resources (OUR) If you have any questions, please contact me at dhabecker@gmail.com

From playlist Illustrative Mathematics Grade 6 Unit 1

A number pattern that results in numbers with 8 for a digit

From playlist Number Patterns

A Maths Puzzle: Find the nine digit number

Find a nine digit numbers, using the numbers 1 to 9, and using each number once without repeats, such that; the first digit is a number divisible by 1. The first two digits is a number divisible by 2; The first three digits is a number divisible by 3 and so on until we get a nine digit num

From playlist My Maths Videos

u07_l3_t1_we1 Identifying Geometric Solids

From playlist Developmental Math

Norwegian Mathematical Olympiad 2016 Q2

We present a solution to Q2 from the 2016 Norwegian Mathematical Olympiad. Also known as the Abel Competition. What is reduction modulo n? https://youtu.be/QjTMbspAjsw Please Subscribe: https://www.youtube.com/michaelpennmath?sub_confirmation=1 Math Contest Playlist: https://www.youtube

From playlist Math Contest Problems

We look at a nice viewer suggested number theory problem. Suggest a problem: https://forms.gle/ea7Pw7HcKePGB4my5 Please Subscribe: https://www.youtube.com/michaelpennmath?sub_confirmation=1 Merch: https://teespring.com/stores/michael-penn-math Personal Website: http://www.michael-penn.

From playlist Viewer suggestions.

Factoring Trinomials & Polynomials, Basic Introduction - Algebra

This algebra video tutorial provides a basic introduction into factoring trinomials and factoring polynomials. It contains plenty of examples and practice problems on how to factor quadratic equations. How To Pass Algebra: https://bit.ly/3eoYO9n Here is a list of topics: 1. Factoring T

From playlist GED Math Playlist

Radicals Complete Review - Simplifying, Rationalizing, Equations, Adding & Subtracting

Learn how to work with radicals in this comprehensive review by Mario's Math Tutoring. We go through 20 examples involving simplifying square roots, cube roots, fourth roots, etc. We also go through how to rationalize radicals when there is a radical in the denominator. We discuss workin

From playlist Algebra 2

Powered by https://www.numerise.com/ Square and cube roots

From playlist Indices, powers & roots

Negative and Fractional Indices (Higher Only) | GCSE Maths Tutor

A video revising the techniques and strategies surrounding the laws of indices, focusing on negative and fractional indices for the higher tier paper. This video is part of the Number module in GCSE maths, see my other videos below to continue with the series. These are the calculators t

From playlist Aiming for Grades 7-9 Maths Series

Powered by https://www.numerise.com/ Estimating a surd value

From playlist Indices, powers & roots

Multiplication & division with surds 1

Powered by https://www.numerise.com/ Multiplication and division with surds 1

From playlist Indices, powers & roots

Take-Home Problems #12 Solutions

From playlist College Algebra