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Illustrated definition of Rhombus: A flat shape with 4 straight sides that are all equal length. Also opposite sides are parallel and opposite...

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A rhombus is actually just a special type of parallelogram.Recall that in a parallelogram each pair of opposite sides are equal in length. With a rhombus, all four sides are the same length.It therefore has all the properties of a parallelogram. See Definition of a parallelogram. Its a bit like a square that can 'lean over' and the interior angles need not be 90°.

www.mathsisfun.com/quadrilaterals

Types of Quadrilaterals. There are special types of quadrilateral: Some types are also included in the definition of other types! For example a square, rhombus and rectangle are also parallelograms. See below for more details. Let us look at each type in turn: The Rectangle. the little squares in each corner mean "right angle"

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Rhombus Definition A rhombus is a quadrilateral (plane figure, closed shape, four sides) with four equal-length sides and opposite sides parallel to each other. All rhombuses are parallelograms, but not all parallelograms are rhombuses.

en.wikipedia.org/wiki/Rhombus

In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length.The rhombus is often called a diamond, after the diamonds suit in playing cards which resembles the projection of an octahedral diamond, or a lozenge, though ...

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Properties of a rhombus.Most people think of a diamond when they think of a Rhombus. A Rhombus can take the shape diamond, but it can take on other shapes as well. Here are 10 Properties of a ...

www.vocabulary.com/dictionary/rhombus

A rhombus is a parallelogram with four equal sides and opposite equal angles. A rhombus can be a square, or if it has two acute angles and two obtuse angles, it takes the shape of a diamond. PLAY

www.easycalculation.com/maths-dictionary/rhombus.html

Rhombus : Rhombus is a flat surface with four equal sides. It is also called as equilateral quadrilateral. Every rhombus is also a parallelogram or a kite. Opposite sides of the rhombus are parallel and equal.

www.splashlearn.com/math-vocabulary/geometry/rhombus

Definition of Rhombus explained with real life illustrated examples. Also learn the facts to easily understand math glossary with fun math worksheet online at SplashLearn. SplashLearn is an award winning math learning program used by more than 30 Million kids for fun math practice.

www.khanacademy.org/.../quadrilaterals/v/rhombus-diagonals

So notice I'm not really changing any of the properties of the rhombus. I'm just drawing it, I'm just changing its orientation a little bit. I'm just changing its orientation. So a rhombus by definition, the four sides are going to be equal. Now, let me draw one of its diagonals. And the way I drew it right here is kind of a diamond.