In geometry, a polyhedron is a solid in three dimensions with flat faces and straight edges. Every edge has exactly two faces, and every vertex is surrounded by alternating faces and edges. The smallest polyhedron is the tetrahedron with 4 triangular faces, 6 edges, and 4 vertices. Named polyhedra primarily come from the families of platonic solids, Archimedean solids, Catalan solids, and Johnson solids, as well as dihedral symmetry families including the pyramids, bipyramids, prisms, antiprisms, and trapezohedrons. (Wikipedia).
Largest Possible Number of Edges for Various Types of Graphs
The video explains how to determine the maximum number of possible edges for various types of graphs. mathispower4u.com
From playlist Graph Theory (Discrete Math)
Polygonal Numbers - Geometric Approach & Fermat's Polygonal Number Theorem
I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
From playlist ℕumber Theory
Introduction Polyhedra Using Euler's Formula
This video introduces polyhedra and how every convex polyhedron can be represented as a planar graph. mathispower4u.com
From playlist Graph Theory (Discrete Math)
Prove There Are Exactly 5 Regular Polyhedra
This video proves a proof that there are exactly 5 regular polyhedra. mathispower4u.com
From playlist Graph Theory (Discrete Math)
Geometry - Basic Terminology (11 of 34) Definition of Polygons and Convex Polygons
Visit http://ilectureonline.com for more math and science lectures! In this video I will define what are polygons and convex polygons. Next video in the Basic Terminology series can be seen at: http://youtu.be/N3wvmbsaFwQ
From playlist GEOMETRY 1 - BASIC TERMINOLOGY
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
How to classify polygons by the measure of their angles
👉 Learn all about classifying triangles. A triangle is a closed figure with three sides. A triangle can be classified based on the length of the sides or based on the measure of the angles. To classify a triangle based on the length of the sides, we have: equilateral (3 sides are equal), i
From playlist Triangles
AlgTop8: Polyhedra and Euler's formula
We investigate the five Platonic solids: tetrahedron, cube, octohedron, icosahedron and dodecahedron. Euler's formula relates the number of vertices, edges and faces. We give a proof using a triangulation argument and the flow down a sphere. This is the eighth lecture in this beginner's
From playlist Algebraic Topology: a beginner's course - N J Wildberger
Daniel Dadush: Probabilistic analysis of the simpler method and polytope diameter
In this talk, I will overview progress in our probabilistic understanding of the (shadow vertex) simplex method in three different settings: smoothed polytopes (whose data is randomly perturbed), well-conditioned polytopes (e.g., TU systems), and random polytopes with constraints drawn uni
From playlist Workshop: Tropical geometry and the geometry of linear programming
Geometry and arithmetic of sphere packings - Alex Kontorovich
Members' Seminar Topic: Geometry and arithmetic of sphere packings Speaker: A nearly optimal lower bound on the approximate degree of AC00 Speaker:Alex Kontorovich Affiliation: Rutgers University Date: October 23, 2017 For more videos, please visit http://video.ias.edu
From playlist Mathematics
Thin Groups and Applications - Alex Kontorovich
Analysis and Beyond - Celebrating Jean Bourgain's Work and Impact May 21, 2016 More videos on http://video.ias.edu
From playlist Analysis and Beyond
Illustrative Mathematics Grade 6 - Unit 1- Lesson 13
Illustrative Mathematics Grade 6 - Unit 1- Lesson 13 Open Up Resources (OUR) If you have any questions, please contact me at dhabecker@gmail.com
From playlist Illustrative Mathematics Grade 6 Unit 1
MIT 6.849 Geometric Folding Algorithms: Linkages, Origami, Polyhedra, Fall 2012 View the complete course: http://ocw.mit.edu/6-849F12 Instructor: Erik Demaine This lecture begins with how to construct a gluing tree. Combinatorial bounds and algorithms are proved for gluing results, which
From playlist MIT 6.849 Geometric Folding Algorithms, Fall 2012
Lecture 16: Vertex & Orthogonal Unfolding
MIT 6.849 Geometric Folding Algorithms: Linkages, Origami, Polyhedra, Fall 2012 View the complete course: http://ocw.mit.edu/6-849F12 Instructor: Erik Demaine This lecture continues with open problems involving general unfoldings of polyhedra and proof of vertex unfolding using constructi
From playlist MIT 6.849 Geometric Folding Algorithms, Fall 2012
Lecture 17: Alexandrov's Theorem
MIT 6.849 Geometric Folding Algorithms: Linkages, Origami, Polyhedra, Fall 2012 View the complete course: http://ocw.mit.edu/6-849F12 Instructor: Erik Demaine This lecture addresses the mathematical approaches for solving the decision problem for folding polyhedra. A proof of Alexandrov's
From playlist MIT 6.849 Geometric Folding Algorithms, Fall 2012
Math Mornings at Yale: Asher Auel - Wallpaper, Platonic Solids, and Symmetry
The Platonic solids-the tetrahedron, cube, octahedron, dodecahedron, and icosahedron-are some of the most beautiful and symmetric geometrical objects in 3-dimensional space. Their mysteries started to be unraveled by the ancient Greeks and still fascinate us today. In 1872, the German geom
From playlist Math Mornings at Yale
MIT 6.849 Geometric Folding Algorithms: Linkages, Origami, Polyhedra, Fall 2012 View the complete course: http://ocw.mit.edu/6-849F12 Instructor: Erik Demaine This lecture introduces the topics covered in the course and its motivation. Examples of applications are provided, types and char
From playlist MIT 6.849 Geometric Folding Algorithms, Fall 2012