Square
(Redirected from Squares)
| Square | |
|---|---|
| File:Regular polygon 4.svg A regular quadrilateral | |
| Type | Regular polygon |
| Edges and vertices | 4 |
| Symmetry group | Dihedral (D4), order 2×4 |
A square is a regular polygon with four equal sides and four equal angles of 90 degrees each. It is a type of quadrilateral and a special case of a rectangle and a rhombus.
Properties[edit | edit source]
A square has several key properties:
- All four sides are of equal length.
- All four angles are right angles (90 degrees).
- The diagonals of a square are equal in length and bisect each other at right angles.
- The diagonals also bisect the angles of the square.
- The square has a high degree of symmetry, with four lines of symmetry and rotational symmetry of order 4.
Formulas[edit | edit source]
The following formulas are used to calculate various properties of a square:
- Perimeter: \( P = 4a \), where \( a \) is the length of a side.
- Area: \( A = a^2 \).
- Diagonal: \( d = a\sqrt{2} \).
Geometric Constructions[edit | edit source]
A square can be constructed using a compass and straightedge: 1. Draw a line segment of the desired length. 2. Construct a perpendicular bisector of the line segment. 3. Use the compass to mark off equal lengths along the perpendicular bisector. 4. Connect the endpoints to form a square.
Applications[edit | edit source]
Squares are used in various fields such as geometry, architecture, and art. They are fundamental in tessellations and are often used in design and engineering due to their symmetry and simplicity.
Related Shapes[edit | edit source]
- Rectangle: A quadrilateral with opposite sides equal and all angles 90 degrees.
- Rhombus: A quadrilateral with all sides equal but not necessarily all angles 90 degrees.
- Parallelogram: A quadrilateral with opposite sides parallel and equal in length.
- Quadrilateral: A polygon with four sides.
See Also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD
