Triangles | Unsolved problems in geometry | Discrete geometry | Recreational mathematics
The Kobon triangle problem is an unsolved problem in combinatorial geometry first stated by Kobon Fujimura (1903-1983). The problem asks for the largest number N(k) of nonoverlapping triangles whose sides lie on an arrangement of k lines. Variations of the problem consider the projective plane rather than the Euclidean plane, and require that the triangles not be crossed by any other lines of the arrangement. (Wikipedia).
Equilateral Triangle & Rectangle Phenomenon
Equilateral triangle & rectangle have common vertex here. Other 2 triangle vertices lie on the rectangle. How can we prove this phenomenon? π€ https://www.geogebra.org/m/jF3acAgK #GeoGebra #MTBoS #ITeachMath #geometry #math #maths #GeomChat #proof #MathEd
From playlist Geometry: Challenge Problems
λ¬μ€νΈλ‘ κΈμ΅ν΄ λ§λ€κΈ°! Making a finance tool with Rust!
μ΄λ€ κΈμ¨ν΄μ λ§λ€ μμ μ΄μ§λ§ μ νν κ³νμ νλλ μμ΅λλ€! μΌλ¨ crossterm + tuiλ‘ μμνλλ‘ νκ² μ΅λλ€. Making some sort of finance tool on request with no plan in particular on how to do it. Going to start with crossterm and tui and go from there. Code so far: https://github.com/Dhghomon/finance-tool
From playlist Other Rust videos
Triangle Side Trisection: Cool Phenomenon
In a triangle, if you draw 6 cevians that end up trisecting all the triangle's sides, you get this phenomenon. Why does this occur? Source: Antonio Gutierrez. https://www.geogebra.org/m/qhabmchn #GeoGebra #geometry #math
From playlist Geometry: Challenge Problems
The corner cube problem is interesting because it initially looks difficult. When the problem was first posed to me, for example, it didn't know how to solve it. Still, my intuition bells were ringing, telling me there was a nice solution. In this video, I cover two of these solutions, in
From playlist Fun
Bryan Johnson's Triangle Theorem
GeoGebra Resource: https://www.geogebra.org/m/jpxyaqcu What happens when we build similar triangles off the sides of ANY TRIANGLE? Check it out! How can we prove this phenomenon true?
From playlist Geometry: Challenge Problems
Concave Quadrilateral Craziness! (GoGeometry Action 80)
Link: https://www.geogebra.org/m/T4axJRwY
From playlist Geometry: Challenge Problems
This video states and investigates the triangle inequality theorem. Complete Video List: http://www.mathispower4u.yolasite.com
From playlist Relationships with Triangles
Japanese Temple Problems I Famous Math Problems 14 | NJ Wildberger
Sangaku are Japanese geometry problems which were posted on temple walls in the Edo period. They are often strikingly original to the Western view, with lovely constructions and challenges involving triangles, circles and ellipses. Here we look at one in particular, posed by 13 year old Sa
From playlist Famous Math Problems
Carnot's Theorem (Obtuse Triangle) = GoGeometry Action 27!
Link: https://www.geogebra.org/m/qfBUGEwe
From playlist Geometry: Challenge Problems
Learn how to determine the missing variable given an isosceles triangle
π Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides are: scalene, isosceles, and equilateral triangles. A
From playlist Triangles
Killer Math Problem With An Unbelievably Elegant Solution
Did you know some math problems were used to discriminate against groups of people? This is one such problem, and it stumped me! But it has an unbelievably elegant solution. Take any equilateral triangle and pick a random point inside the triangle. Draw from each vertex a line to the rand
From playlist Math Puzzles, Riddles And Brain Teasers
How Classifying Triangles Helps Solve Problems | Part 1
I think we all learn how to classify triangles, but why do we learn it and how is it helpful for us to solve math problems? βοΈ Find the Missing Angle of a Right Triangle Using Trig - https://youtu.be/m8XtAlKmXGg βοΈ Classify a Triangle Given Coordinate Points | Part 2 - https://youtu.be/V
From playlist Learn Triangles in Parts | Geometry
Hypergraph matchings and designs β Peter Keevash β ICM2018
Combinatorics Invited Lecture 13.10 Hypergraph matchings and designs Peter Keevash Abstract: We survey some aspects of the perfect matching problem in hypergraphs, with particular emphasis on structural characterisation of the existence problem in dense hypergraphs and the existence of d
From playlist Combinatorics
GeometricScene in Olympiad Geometry
This talk from Shenghui Yang demonstrates how to use Wolfram Language functions to help us understand the idea behind the construction proof. Since good visualization is critical to help focus on the important part in a complicated GeometricScene, he also shows the proper use of HatchFilli
From playlist Wolfram Technology Conference 2020
CPCTC Geometry Proofs Made Easy, Triangle Congruence - SSS, SAS, ASA, & AAS, Two Colmn Proofs
This video tutorial provides a basic introduction into CPCTC geometry proofs. CPCTC stands for "corresponding parts of congruent triangles are congruent" It's the step that comes right after proving the congruence of two triangles. Some triangle congruence theorems you need to know are
From playlist Geometry Video Playlist
What is the area of the red stripes?
This is a brilliantly fun geometry problem! 0:00 problem 1:00 similar triangles 3:00 solution References Similar triangles area (Math StackExchange) https://math.stackexchange.com/questions/1588290/similar-triangles-are-to-one-another-in-the-squared-ratio-of-their-correspondi Euclid sim
From playlist Math Puzzles, Riddles And Brain Teasers
We solve a problem from the 1990 Mathcounts competition. We're given a triangle's vertices with coordinates, and are asked to find the coordinates of the point on a side of the triangle that, by joining it to the opposite vertex, will cut the triangle into two smaller triangles of equal ar
From playlist Math Competition Problems
Triangle Congruence Theorems, Two Column Proofs, SSS, SAS, ASA, AAS Postulates, Geometry Problems
This geometry video tutorial provides a basic introduction into triangle congruence theorems. It explains how to prove if two triangles are congruent using the SSS, SAS, ASA, and AAS postulate using two column proofs. Here is a list of topics contained in the statements and reasons of th
From playlist Geometry Video Playlist
"98% Fail" - How Many Triangles Are There? Viral Bollywood Puzzle
This problem caught the attention of Bollywood celebs, including Sonam Kapoor, Aditi Rao Hydari, and Diana Penty, after fashion magazine editor Jitesh Pillai tweeted it. How many triangles are there? This is not just a simple test of observational ability. This is a common test question in
From playlist Viral Math Memes
Using the Isosceles triangle theorem to find the measure of x
π Learn how to find the missing side of a triangle. A triangle is a polygon with three sides. Triangles are classified on the basis of the angles or on the basis of the sides. The classification of a triangle on the basis of the sides are: scalene, isosceles, and equilateral triangles. A
From playlist Triangles