Types of quadrilaterals | Elementary shapes
In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. The congruence of opposite sides and opposite angles is a direct consequence of the Euclidean parallel postulate and neither condition can be proven without appealing to the Euclidean parallel postulate or one of its equivalent formulations. By comparison, a quadrilateral with just one pair of parallel sides is a trapezoid in American English or a trapezium in British English. The three-dimensional counterpart of a parallelogram is a parallelepiped. The etymology (in Greek παραλληλ-όγραμμον, parallēl-ógrammon, a shape "of parallel lines") reflects the definition. (Wikipedia).
Using the properties of parallelograms to solve for the missing diagonals
👉 Learn how to solve problems with parallelograms. A parallelogram is a four-sided shape (quadrilateral) such that each pair of opposite sides are parallel and are equal. Some of the properties of parallelograms are: each pair of opposite sides are equal, each pair of opposite sides are pa
From playlist Properties of Parallelograms
What are the properties that make up a parallelogram
👉 Learn how to solve problems with parallelograms. A parallelogram is a four-sided shape (quadrilateral) such that each pair of opposite sides are parallel and are equal. Some of the properties of parallelograms are: each pair of opposite sides are equal, each pair of opposite sides are pa
From playlist Properties of Parallelograms
I introduce the Properties of Parallelograms...the opposite sides are equal, the opposite angles are equal, the consecutive angles are supplementary, and the diagonals bisect each other. I work through four algebraic examples in this video at 4:28 14:30 Find free review test, useful notes
From playlist Geometry
This geometry video tutorial provides a basic introduction into parallelograms. It explains the properties of parallelograms and how to use it calculate the missing sides and missing angles of parallelograms. It contains plenty of examples and practice problems for you to work on. Oppo
From playlist Geometry Video Playlist
What are parallel lines and a transversal
👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i
From playlist Parallel Lines and a Transversal
Geometry - Identifying Consecutive Interior Angles from a Figure
👉 Learn how to identify angles from a figure. This video explains how to solve problems using angle relationships between parallel lines and transversal. We'll determine the solution given, corresponding, alternate interior and exterior. All the angle formed by a transversal with two paral
From playlist Parallel Lines and a Transversal
Geometry - Identifying Corresponding Angles from a Figure
👉 Learn how to identify angles from a figure. This video explains how to solve problems using angle relationships between parallel lines and transversal. We'll determine the solution given, corresponding, alternate interior and exterior. All the angle formed by a transversal with two paral
From playlist Parallel Lines and a Transversal
What are the Angle Relationships for Parallel Lines and a Transversal
👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i
From playlist Parallel Lines and a Transversal
What's a Parallelogram? Geometry Terms and Definitions
An introduction to the parallelogram, a fundamental geometric shape. Geometer: Louise McCartney Artwork: Kelly Vivanco Director: Michael Harrison Written & Produced by Kimberly Hatch Harrison and Michael Harrison ♦♦♦♦♦♦♦♦♦♦ Ways to support our channel: ► Join our Patreon : https://www
From playlist Socratica: The Geometry Glossary Series
Illustrative Mathematics Grade 6 - Unit 1- Lesson 8
Illustrative Mathematics Grade 6 - Unit 1- Lesson 8 Open Up Resources (OUR)
From playlist Illustrative Mathematics Grade 6 Unit 1
Parallelograms – Learn Basic Geometry
TabletClass Math: https://tcmathacademy.com/ Math video on parallelograms. For more math help to include math lessons, practice problems and math tutorials check out my full math help program at https://tcmathacademy.com/ Math Notes: Pre-Algebra Notes: https://tabletclass-ma
From playlist Geometry
Illustrative Mathematics Grade 6 - Unit 1- Lesson 4
Illustrative Mathematics Grade 6 - Unit 1- Lesson 4 Open Up Resources (OUR)
From playlist Illustrative Mathematics Grade 6 Unit 1
Incredibly hard geometry problem from Russia
This challenging problem was given to students in Russia, but it stumped me! The question was presented as text only--no diagram. Also, the problem was part of an entrance exam for a selective high school. Can you solve it? From each corner of a parallelogram, draw two line segments to con
From playlist Math Puzzles, Riddles And Brain Teasers
Genius student solved this in 1 minute - insanely hard geometry problem
Thanks to Bill from New York for this suggestion! Bill emailed me a problem asked in China to identify talented students. A few very talented students did solve it in less than one minute! I was not able to solve the problem at all. The question involves finding the area of a red triangle
From playlist Math Puzzles, Riddles And Brain Teasers
Lecture Video – Properties of Special Parallelograms
Lecture notes and guided problems involving special parallelograms and theorems for rhombus, rectangle, and square.
From playlist Geometry
Illustrative Mathematics Grade 6 - Unit 1- Lesson 6
Illustrative Mathematics Grade 6 - Unit 1- Lesson 6 Open Up Resources (OUR)
From playlist Illustrative Mathematics Grade 6 Unit 1
Proving Parallelograms With Two Column Proofs - Geometry
This geometry video tutorial provides a basic introduction into two column proofs with parallelograms. It explains the different ways of proving parallelograms. Here are five ways: 1. opposite sides must be parallel. 2. Opposite sides must be congruent. 3. opposite angles must be c
From playlist Geometry Video Playlist
Eureka Math Grade 5 Module 5 Lesson 17
EngageNY/Eureka Math Grade 5 Module 5 Lesson 17 For more videos, please visit http://bit.ly/eurekapusd PLEASE leave a message if a video has a technical difficulty (audio separating from the video). Occasionally, Explain Everything will do that, requiring me to re-render the video. Duane
From playlist Eureka Math Grade 5 Module 5
Illustrative Mathematics Grade 6 - Unit 1- Lesson 7
Illustrative Mathematics Grade 6 - Unit 1- Lesson 7 Open Up Resources (OUR)
From playlist Illustrative Mathematics Grade 6 Unit 1
Proving Parallel Lines with Angle Relationships
👉 Learn about converse theorems of parallel lines and a transversal. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two arrow heads or two small lines indicated i
From playlist Parallel Lines and a Transversal