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Square Facts for Kids - Interesting Information about Squares

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Check out our square facts for kids and learn some interesting information about this regular quadrilateral. Find out how to find the area and perimeter of a square, how many lines of symmetry square has, what the internal angles of a square add to and much more.

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A Rhombus is a flat shape with 4 equal straight sides.

A rhombus looks like a diamond

All sides have equal length

Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram).

The altitude is the right angle distance between opposite sides

And the diagonals "p" and "q" of a rhombus bisect each other at right angles.

Play with a rhombus:

images/geom-quad.js?mode=rhombus

Area of a Rhombus

The Area can be calculated by:

the altitude times the side length:

the side length squared (s²) times the sine of angle A (or angle B):

by multiplying the lengths of the diagonals and then dividing by 2:

Example: A rhombus has diagonals of 6 m and 8 m, what is its Area?

Area = (6 m × 8 m)/2 = 24 m²

If you can draw your Rhombus, try the Area of Polygon by Drawing tool.

Perimeter of a Rhombus

The Perimeter is the distance around the edges.

The Perimeter is 4 times "s" (the side length)
because all sides are equal in length:

Perimeter = 4s

Example: A rhombus has a side length of 12 cm, what is its Perimeter?

Perimeter = 4 × 12 cm = 48 cm

Is a Square a Rhombus?

Yes, because a square is just a rhombus where the angles are all right angles.

Other Names

It is more common to call this shape a rhombus, but some people call it a rhomb or even a diamond.

The plural is rhombi or rhombuses, and, rarely, rhombbi or rhombbuses (with a double b).

The name "rhombus" comes from the Greek word rhombos: a piece of wood whirled on a string to make a roaring noise!

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A Rhombus is a flat shape with 4 equal straight sides. A rhombus looks like a diamond All sides have equal length Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram). The altitude is the right angle distance between opposite sides And the diagonals "p" and "q" of a rhombus bisect each other at right angles.

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Isosceles Trapezoid -- from Wolfram MathWorld

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a four-sided rectilinear figure with opposite sides parallel