Perfect graphs | Intersection classes of graphs

Trapezoid graph

In graph theory, trapezoid graphs are intersection graphs of trapezoids between two horizontal lines. They are a class of co-comparability graphs that contain interval graphs and permutation graphs as subclasses. A graph is a trapezoid graph if there exists a set of trapezoids corresponding to the vertices of the graph such that two vertices are joined by an edge if and only if the corresponding trapezoids intersect. Trapezoid graphs were introduced by , Golumbic, and Pinter in 1988. There exists algorithms for chromatic number, weighted independent set, clique cover, and maximum weighted clique. (Wikipedia).

Trapezoid graph
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What is the difference of a trapezoid and an isosceles trapezoid

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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What is a trapezoid

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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Learning to solve for the midsegment of a trapezoid

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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How to solve for the midsegment of a trapezoid

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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What are some characteristics of an isosceles trapezoid

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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Finding the value of x using a trapezoid alternate interior angles and supplementary

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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Applying the midsegment theorem to find the base of a trapezoid

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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How to find the missing length of a trapezoid using the midsegment formula

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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What is the trapezoid midsegment theorem

πŸ‘‰ Learn how to solve problems with trapezoids. A trapezoid is a four-sided shape (quadrilateral) such that one pair of opposite sides are parallel. Some of the properties of trapezoids are: one pair of opposite sides are parallel, etc. A trapezoid is isosceles is one pair of opposite sides

From playlist Properties of Trapezoids

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AP Calculus AB: Lesson 6.2 Riemann and Trapezoidal Sums

AP Calculus AB Unit 6: Integration Lesson 2: Riemann and Trapezoidal Sums

From playlist AP Calculus AB

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From playlist Kinematics Video Tutorial Series

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Parts 2b and 2c of the 2008 BC exam (free response). Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-bc/bc-solved-exams/bc-solved-exams-2008/v/calculus-bc-2008-2d?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusBC Missed the previous lesson?

From playlist AP Calculus BC solved exams | AP Calculus BC | Khan Academy

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Riemann Sum AP Calculus Review Pt 6 (2 Examples)

We look at one example of a Trapezoidal Sum from a table of values. The second example lists the values of a left, right, trapezoidal, and actual value of a definite integral. Check out http://www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topic

From playlist AP Calculus AB & BC Style Questions

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From playlist Continuous Sums: the Definite Integral

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From playlist The Math Library

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From playlist Finite Sums

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Ex: Numerical Integration - The Trapezoid Rule

This video provides an example of how to use the Trapezoid Rule to estimate a definite integral. Site: http://mathispower4u.com

From playlist Numerical Integration

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In this video, I go through the AP Calculus BC 2008 (calculator) section, questions 76 - 92. I cover a lot of topics from the AP Calculus BC curriculum and teach calculator techniques for integration and derivatives. This video is especially appropriate for anyone preparing for the AP Calc

From playlist AP Calculus AB/BC Review

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This lecture is on Calculus II. It follows Part II of the book Calculus Illustrated by Peter Saveliev. The text of the book can be found at http://calculus123.com.

From playlist Calculus II

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Trapezoid Properties

Watch more videos on http://www.brightstorm.com/math/geometry SUBSCRIBE FOR All OUR VIDEOS! https://www.youtube.com/subscription_center?add_user=brightstorm2 VISIT BRIGHTSTORM.com FOR TONS OF VIDEO TUTORIALS AND OTHER FEATURES! http://www.brightstorm.com/ LET'S CONNECT! Facebook β–Ί https

From playlist Geometry

Related pages

Interval graph | Graph theory | Independent set (graph theory) | Intersection graph | Bipartite graph | Permutation graph | Trapezoid | Perfect graph