david faustino's definitions
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. The three-dimensional counterpart of a parallelogram is a parallelepiped.
The etymology (in Greek παραλληλ-όγραμμον, a shape "of parallel lines") reflects the definition.
A simple (non self-intersecting) quadrilateral is a parallelogram if and only if any one of the following statements is true:12
Two pairs of opposite sides are equal in length.
Two pairs of opposite angles are equal in measure.
The diagonals bisect each other.
One pair of opposite sides are parallel and equal in length.
Adjacent angles are supplementary.
Each diagonal divides the quadrilateral into two congruent triangles.
The sum of the squares of the sides equals the sum of the squares of the diagonals. (This is the parallelogram law.)
It has rotational symmetry of order 2.
The etymology (in Greek παραλληλ-όγραμμον, a shape "of parallel lines") reflects the definition.
A simple (non self-intersecting) quadrilateral is a parallelogram if and only if any one of the following statements is true:12
Two pairs of opposite sides are equal in length.
Two pairs of opposite angles are equal in measure.
The diagonals bisect each other.
One pair of opposite sides are parallel and equal in length.
Adjacent angles are supplementary.
Each diagonal divides the quadrilateral into two congruent triangles.
The sum of the squares of the sides equals the sum of the squares of the diagonals. (This is the parallelogram law.)
It has rotational symmetry of order 2.
What are you studying Jane?
Oh, I am studying quadrilaterals, specifically I am on Chapter 5 proving a quadrilateral is a Parallelogram, Claire.
Oh, I am studying quadrilaterals, specifically I am on Chapter 5 proving a quadrilateral is a Parallelogram, Claire.
by david faustino December 18, 2012
Get the Parallelogrammug. A dessert that consists of melted chocolate bars, cocoa powder, sugar, eggs, salt, baking soda, baking powder, and butter or margarine.
by david faustino September 6, 2012
Get the browniemug. Allrecipes.com is a global social networking service and forum, which encourages users to post recipes, comment on and make changes to existing recipes and search for specific recipes. In addition, it allows users to create recipe blogs, vote on pictures of finished dishes, and receive awards based on their submissions and results. Users become part of the community by reviewing and commenting on other people's food-related blogs, pictures and recipes. As of 2010, Allrecipes.com was the most-visited online community for food and cooking, with over 16 million visitors per month and more than 40,000 available recipes.23
All users may search and read the site's content, but only logged-in, registered members may post recipes, write blogs, add pictures, or write reviews. Registration is free.
All users may search and read the site's content, but only logged-in, registered members may post recipes, write blogs, add pictures, or write reviews. Registration is free.
Where can I find an abundance of recipes?
Oh, thats simple Bob go to Allrecipes.com, they have a great variety.
Oh, thats simple Bob go to Allrecipes.com, they have a great variety.
by david faustino December 13, 2012
Get the Allrecipes.commug. To cook over low-heat!
What temperature are you cooking the chicken and dumplings?
I am letting it simmer!
Oh, so you are cooking it slowly over low-heat!
I am letting it simmer!
Oh, so you are cooking it slowly over low-heat!
by david faustino October 21, 2012
Get the simmermug. by david faustino October 18, 2012
Get the Clear Soul Forcesmug. A geometric figure.
In mathematics, an annulus (the Latin word for "little ring", with plural annuli) is a ring-shaped geometric figure, or more generally, a term used to name a ring-shaped object. It is also used to describe the area between two concentric circles. The adjectival form is annular (for example, an annular eclipse).
The area of an annulus is the difference in the areas of the larger circle of radius R and the smaller one of radius r:
A = \pi R^2 - \pi r^2 = \pi(R^2 - r^2)\,.
In mathematics, an annulus (the Latin word for "little ring", with plural annuli) is a ring-shaped geometric figure, or more generally, a term used to name a ring-shaped object. It is also used to describe the area between two concentric circles. The adjectival form is annular (for example, an annular eclipse).
The area of an annulus is the difference in the areas of the larger circle of radius R and the smaller one of radius r:
A = \pi R^2 - \pi r^2 = \pi(R^2 - r^2)\,.
by David Faustino November 28, 2012
Get the Annulusmug. Did you see the earthquake in Japan?
Yeah, I hope there were minimal casualties in that earthquake.
Bob, that is real talk!
Yeah, I hope there were minimal casualties in that earthquake.
Bob, that is real talk!
by david faustino September 25, 2012
Get the real talkmug.