In mathematics, specifically in topology of manifolds, a compact codimension-one submanifold of a manifold is said to be 2-sided in when there is an embedding with for each and . In other words, if its normal bundle is trivial. This means, for example that a curve in a surface is 2-sided if it has a tubular neighborhood which is a cartesian product of the curve times an interval. A submanifold which is not 2-sided is called 1-sided. (Wikipedia).

What are four types of polygons

π 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

Geometry - Constructions (8.5 of 15) How to Draw 2 Lines that are Parallel

Visit http://ilectureonline.com for more math and science lectures! THIS VIDEO IS A REPOST OF AN ERROR VIDEO: https://youtu.be/bDPuVvpJETc In this video I will demonstrate how to draw 2 lines that are exactly parallel. Next video in the Constructions series can be seen at: http://youtu.

From playlist GEOMETRY 2 - CONSTRUCTIONS

What is the difference between convex and concave

π 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

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

π 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

Geometry - Constructions (2 of 15) How to Draw Angles of the Same Measure

Visit http://ilectureonline.com for more math and science lectures! In this video I will demonstrate how to draw exact angles of the same measure. Next video in the Constructions series can be seen at: http://youtu.be/2yBv2rIUeNg

From playlist GEOMETRY 2 - CONSTRUCTIONS

Geometry - How to show two triangles are similar using AA with parallel sides

π Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides are proportional. Knowledge of the length of the side

From playlist Similar Triangles

Geometry - Ch. 1: Basic Concepts (24 of 49) What are Vertical Angles and Linear Pairs?

Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the definition of an and show how to recognize vertical angle and linear pairs. Linear pairs are angles whose non-common rays are opposite rays. Vertical angles are angles whose 2 sides form o

From playlist THE "WHAT IS" PLAYLIST

What is the difference between convex and concave polygons

From playlist Classify Polygons

From playlist Classify Polygons

How to Solve By Completing the Square (NancyPi)

MIT grad shows the easiest way to complete the square to solve a quadratic equation. To skip ahead: 1) for a quadratic that STARTS WITH X^2, skip to time 1:42. 2) For a quadratic that STARTS WITH 2X^2, 3X^2, etc., skip to time 6:46. 3) For NEGATIVE leading term like -X^2, skip to 13:34. 4)

From playlist Algebra

Solving Equations - Brackets and Unknowns on both sides

How to solve linear equations with brackets and unknowns on both sides. For more, check out Algebra - from Beginner to Master playlist: https://www.youtube.com/playlist?list=PLm4auYJQkF_qXieBCz3qFk9IYwi-qUtSH Support the channel: https://www.youtube.com/channel/UCf89Gd0FuNUdWv8FlSS7lqQ/j

From playlist Algebra - Beginner to Master

Core 3 Past Paper Questions - Trig double angle

Powered by https://www.numerise.com/ All past paper solutions to double angle and addition trig equations. www.hegartymaths.com http://www.hegartymaths.com/

From playlist Core 3 Edexcel Maths Past Paper Exam Solutions By Topic

Intermediate Algebra Lecture 11.1: Solving Quadratic Equations By Completing the Square

https://www.patreon.com/ProfessorLeonard Intermediate Algebra Lecture 11.1: Solving Quadratic Equations By Completing the Square

From playlist Intermediate Algebra (Full Length Videos)

partial fractions, two ways to find the constants (KristaKingMath)

βΊ My Integrals course: https://www.kristakingmath.com/integrals-course In this video I show two different methods for finding the constants in a partial fractions decomposition. The first, and more complicated way, is to set up a system of simultaneous linear equations, and then use subst

From playlist Integrals

Solving Linear Equations (part two)

More examples! Facebook: www.facebook.com/braingainzofficial Instagram: www.instagram.com/braingainzofficial Thanks for watching! Comment below with any questions / feedback and make sure to like / subscribe if you enjoyed!

From playlist Intermediate Algebra

JEE Advanced Physics 2021 Paper 2 #16 Thermodynamics

Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 A thermally insulating cylinder has a thermally and frictionless movable partition in the middle. On each side of the partition, ther

From playlist JEE (ADVANCED) 2021 PAPER 2 PHYSICS

45-45-90 triangles (KristaKingMath)

βΊ My Geometry course: https://www.kristakingmath.com/geometry-course In this video we'll learn about the special things that happen in the specific instance of a 45-45-90 triangle, which is a triangle whose three interior angles are 45 degrees, 45 degrees, and 90 degrees. This triangle, b

From playlist Geometry

Solving Linear Equations with Unknowns Both Sides | GCSE Maths Tutor

A video revising the techniques and strategies for solving linear equations with unknowns both sides. (Higher & Foundation). This video is part of the Algebra module in GCSE maths, see my other videos below to continue with the series focussed on equations and sequences. These are the ca

From playlist GCSE Maths Videos

Showing two triangles are similar using SAS

π Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides are proportional. Knowledge of the length of the side

From playlist Similar Triangles

Examples 1: Determining Limits and One-Sided Limits Graphically

This video provides several examples of determining limits and one-sided limits graphically. Complete Video List at http://www.mathispower4u.com

From playlist Limits