4-polytopes

Regular 4-polytope

In mathematics, a regular 4-polytope is a regular four-dimensional polytope. They are the four-dimensional analogues of the regular polyhedra in three dimensions and the regular polygons in two dimensions. There are six convex and ten star regular 4-polytopes, giving a total of sixteen. (Wikipedia).

Regular 4-polytope
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What are four types of polygons

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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Using a set of points determine if the figure is a parallelogram using the midpoint formula

👉 Learn how to determine the figure given four points. A quadrilateral is a polygon with four sides. Some of the types of quadrilaterals are: parallelogram, square, rectangle, rhombus, kite, trapezoid, etc. Each of the types of quadrilateral has its properties. Given four points that repr

From playlist Quadrilaterals on a Coordinate Plane

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What are the names of different types of polygons based on the number of sides

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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What is a net

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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Classifying a polygon in two different ways ex 4

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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Regular polyhedra

This shows a 3d print of a mathematical sculpture I produced using shapeways.com. This model is available at http://shpws.me/q0PF.

From playlist 3D printing

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Tropical Geometry - Lecture 8 - Surfaces | Bernd Sturmfels

Twelve lectures on Tropical Geometry by Bernd Sturmfels (Max Planck Institute for Mathematics in the Sciences | Leipzig, Germany) We recommend supplementing these lectures by reading the book "Introduction to Tropical Geometry" (Maclagan, Sturmfels - 2015 - American Mathematical Society)

From playlist Twelve Lectures on Tropical Geometry by Bernd Sturmfels

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Perfect Shapes in Higher Dimensions - Numberphile

Carlo Sequin talks through platonic solids and regular polytopes in higher dimensions. More links & stuff in full description below ↓↓↓ Extra footage (Hypernom): https://youtu.be/unC0Y3kv0Yk More videos with with Carlo: http://bit.ly/carlo_videos Edit and animation by Pete McPartlan Pete

From playlist Carlo Séquin on Numberphile

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Tropical Geometry - Lecture 9 - Tropical Convexity | Bernd Sturmfels

Twelve lectures on Tropical Geometry by Bernd Sturmfels (Max Planck Institute for Mathematics in the Sciences | Leipzig, Germany) We recommend supplementing these lectures by reading the book "Introduction to Tropical Geometry" (Maclagan, Sturmfels - 2015 - American Mathematical Society)

From playlist Twelve Lectures on Tropical Geometry by Bernd Sturmfels

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What is the difference between convex and concave

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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What is the definition of a regular polygon and how do you find the interior angles

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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Amina Buhler - The Magic of Polytopes-Mandalas - CoM July 2021

Polytopes are 3-Dimensional shadows from higher dimensional polyhedra (4-Dimensional & above). These 3-D shadows, when rotated suddenly out of chaos, line-up & reveal, cast mandala patterns into 2-D of 2,3, & 5-fold symmetry. While constructing a stainless steel 120-cell (4-D dodecahed

From playlist Celebration of Mind 2021

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AlgTop9: Applications of Euler's formula and graphs

We use Euler's formula to show that there are at most 5 Platonic, or regular, solids. We discuss other types of polyhedra, including deltahedra (made of equilateral triangles) and Schafli's generalizations to higher dimensions. In particular in 4 dimensions there is the 120-cell, the 600-c

From playlist Algebraic Topology: a beginner's course - N J Wildberger

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What is the difference between a regular and irregular polygon

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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Jeroen Schillewaert: Constructing highly regular expanders from hyperbolic Coxeter groups

Thursday 17 November 2022 Jeroen Schillewaert, University of Auckland Abstract: Given a string Coxeter system (W,S), we construct highly regular quotients of the 1-skeleton of its universal polytope P, which form an infinite family of expander graphs when (W,S) is indefinite and P has fin

From playlist SMRI Seminars

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Lauren Williams - Combinatorics of the amplituhedron

The amplituhedron is the image of the positive Grassmannian under a map in- duced by a totally positive matrix. It was introduced by Arkani-Hamed and Trnka to compute scattering amplitudes in N=4 super Yang Mills. I’ll give a gentle introduction to the amplituhedron, surveying its connecti

From playlist Combinatorics and Arithmetic for Physics: Special Days 2022

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Thomas Eliot - undergraduate talk

Thomas Eliot delivers an undergraduate research talk at the Worldwide Center of Mathematics

From playlist Center of Math Research: the Worldwide Lecture Seminar Series

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Fooling polytopes - Li-Yang Tan

Computer Science/Discrete Mathematics Seminar I Topic: Fooling polytopes Speaker: Li-Yang Tan Affiliation: Stanford University Date: April 1, 2019 For more video please visit http://video.ias.edu

From playlist Mathematics

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Toric Arrangements - Margaret Readdy

Margaret Readdy University of Kentucky; Member, School of Mathematics October 26, 2010 The cd-index is a noncommutative polynomial which compactly encodes the flag vector data of a polytope, and more generally, of a regular cell complex. Ehrenborg and Readdy discovered the cd-index has an

From playlist Mathematics

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Sketch a net from a 3D figure

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1

From playlist Classify Polygons

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Order (group theory) | 3-sphere | Grand stellated 120-cell | Ludwig Schläfli | Great grand stellated 120-cell | Grand 120-cell | Configuration (polytope) | Face (geometry) | Platonic solid | Vertex arrangement | Orthographic projection | Hypercube | Betti number | John Horton Conway | Star polyhedron | Vertex figure | Small stellated dodecahedron | Arthur Cayley | 24-cell | 16-cell | Pentagon | Schlegel diagram | 4-polytope | Regular polyhedron | Schläfli symbol | Vertex (geometry) | Great grand 120-cell | Dodecahedron | Euler characteristic | Great icosahedron | Pentagonal polytope | Tetrahedron | 57-cell | Simplex | Star polygon | Abstract polytope | Regular polytope | Tesseract | 5-polytope | Great stellated 120-cell | Great icosahedral 120-cell | Convex polytope | 5-cell | Great stellated dodecahedron | Mathematics | Rhombic dodecahedron | Cross-polytope | Coxeter group | Regular icosahedron | Cube | Grand 600-cell | Square | Stellation | Stereographic projection | Cuboctahedron | 120-cell | Great dodecahedron | Icosahedral 120-cell | Pentakis icosidodecahedron | Uniform 4-polytope | Density (polytope) | 11-cell | Edge (geometry) | List of regular polytopes and compounds | 600-cell | Goursat tetrahedron | Kepler–Poinsot polyhedron | Octahedron | Regular polygon | Triangle | Uniform polytope | Small stellated 120-cell | Pentagram | Great 120-cell | Dihedral angle