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Rectangle - Wikipedia

en.wikipedia.org/wiki/Rectangle

In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular ...

Rectangle - Math is Fun

www.mathsisfun.com/geometry/rectangle.html

Rectangle. (Jump to Area of a Rectangle or Perimeter of a Rectangle). A rectangle is a four-sided flat shape where every angle is a right angle (90°).

Definition of Rectangle - Math is Fun

www.mathsisfun.com/definitions/rectangle.html

Rectangle. A 4-sided flat shape with straight sides where all interior angles are right angles (90°). Also opposite sides are parallel and of equal length. Example:  ...

Cool math .com - The Properties of a Rectangle (perimeter, area ...

www.coolmath.com/reference/rectangles

Definitions and formulas for the perimeter of a rectangle, the area of a rectangle, how to find the length of the diagonal of a rectangle, properties of the diagonals ...

Area of a Rectangle - Math Goodies

www.mathgoodies.com/lessons/vol1/area_rectangle.html

The area of a polygon is the number of square units inside the polygon. To understand the difference between perimeter and area, think of perimeter as the  ...

Rectangle - math word definition - Math Open Reference

www.mathopenref.com/rectangle.html

The rectangle, like the square, is one of the most commonly known quadrilaterals . It is defined as having all four interior angles 90° (right angles).

Rectangle -- from Wolfram MathWorld

mathworld.wolfram.com/Rectangle.html

Rectangle. DOWNLOAD Mathematica Notebook EXPLORE THIS TOPIC IN the MathWorld Classroom Rectangle. A closed planar quadrilateral with opposite ...

IXL - Find the area of rectangles and squares (3rd grade math ...

www.ixl.com/math/grade-3/find-the-area-of-rectangles-and-squares

Fun math practice! Improve your skills with free problems in 'Find the area of rectangles and squares' and thousands of other practice lessons.

Rectangle—Wolfram Language Documentation

reference.wolfram.com/language/ref/Rectangle.html

Rectangle[{xmin, ymin}, {xmax, ymax}] represents an axis-aligned filled rectangle from {xmin, ymin} to {xmax, ymax}. Rectangle[{xmin, ymin}] corresponds to a ...

Rectangle Structure (System.Drawing) - MSDN - Microsoft

msdn.microsoft.com/en-us/library/system.drawing.rectangle(v=vs.110).aspx

Initializes a new instance of the Rectangle class with the specified location and size. ... Gets the x-coordinate of the left edge of this Rectangle structure.

Answers
rec·tan·gle
[rek-tang-guhl]
NOUN
1.
a parallelogram having four right angles.
Source: Dictionary.com
rectangles | Define rectangles at Dictionary.com
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