The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c).
Symbolic statement
Generalizations
Law of cosines
Solid geometry
Non-Euclidean geometry
Differential geometry
Consequences
Pythagorean triple
Reciprocal Pythagorean theorem
Complex number
Euclidean distance
Pythagorean trigonometric identity
Geometry
Projecting a sphere to a plane
Outline
History (Timeline)
Branches
Euclidean
Non-Euclidean
Elliptic
Spherical
Hyperbolic
Non-Archimedean geometry
Projective
Affine
Synthetic
Analytic
Algebraic
Arithmetic
Diophantine
Differential
Riemannian
Symplectic
Discrete differential
Complex
Finite
Discrete/Combinatorial
Digital
Convex
Computational
Fractal
Incidence
Noncommutative geometry
Noncommutative algebraic geometry
Concepts
Features
Dimension
Straightedge and compass constructions
Angle
Curve
Diagonal
Orthogonality (Perpendicular)
Parallel
Vertex
Congruence
Similarity
Symmetry
Zero-dimensional
Point
One-dimensional
Line
segment
ray
Length
Two-dimensional
Plane
Area
Polygon
Triangle
Altitude
Hypotenuse
Pythagorean theorem
Parallelogram
Square
Rectangle
Rhombus
Rhomboid
Quadrilateral
Trapezoid
Kite
Circle
Diameter
Circumference
Area
Three-dimensional
Volume
Cube
cuboid
Cylinder
Dodecahedron
Icosahedron
Octahedron
Pyramid
Platonic Solid
Sphere
Tetrahedron
Four- / other-dimensional
Tesseract
Hypersphere
Geometers
by name
Aida
Aryabhata
Ahmes
Alhazen
Apollonius
Archimedes
Atiyah
Baudhayana
Bolyai
Brahmagupta
Cartan
Coxeter
Descartes
Euclid
Euler
Gauss
Gromov
Hilbert
Huygens
Jyeṣṭhadeva
Kātyāyana
Khayyám
Klein
Lobachevsky
Manava
Minkowski
Minggatu
Pascal
Pythagoras
Parameshvara
Poincaré
Riemann
Sakabe
Sijzi
al-Tusi
Veblen
Virasena
Yang Hui
al-Yasamin
Zhang
List of geometers
by period
BCE
Ahmes
Baudhayana
Manava
Pythagoras
Euclid
Archimedes
Apollonius
1–1400s
Zhang
Kātyāyana
Aryabhata
Brahmagupta
Virasena
Alhazen
Sijzi
Khayyám
al-Yasamin
al-Tusi
Yang Hui
Parameshvara
1400s–1700s
Jyeṣṭhadeva
Descartes
Pascal
Huygens
Minggatu
Euler
Sakabe
Aida
1700s–1900s
Gauss
Lobachevsky
Bolyai
Riemann
Klein
Poincaré
Hilbert
Minkowski
Cartan
Veblen
Coxeter
Present day
Atiyah
Gromov
v
t
e
In mathematics, the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.
The theorem can be written as an equation relating the lengths of the sides a, b and the hypotenuse c, sometimes called the Pythagorean equation:[1]
The theorem is named for the Greek philosopher Pythagoras, born around 570 BC. The theorem has been proved numerous times by many different methods – possibly the most for any mathematical theorem. The proofs are diverse, including both geometric proofs and algebraic proofs, with some dating back thousands of years.
When Euclidean space is represented by a Cartesian coordinate system in analytic geometry, Euclidean distance satisfies the Pythagorean relation: the squared distance between two points equals the sum of squares of the difference in each coordinate between the points.
The theorem can be generalized in various ways: to higher-dimensional spaces, to spaces that are not Euclidean, to objects that are not right triangles, and to objects that are not triangles at all but n-dimensional solids.
^Judith D. Sally; Paul Sally (2007). "Chapter 3: Pythagorean triples". Roots to research: a vertical development of mathematical problems. American Mathematical Society Bookstore. p. 63. ISBN 978-0-8218-4403-8.
and 22 Related for: Pythagorean theorem information
In mathematics, the Pythagoreantheorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle...
geometry, the inverse Pythagoreantheorem (also known as the reciprocal Pythagoreantheorem or the upside down Pythagoreantheorem) is as follows: Let A...
(the same for the three elements). The name is derived from the Pythagoreantheorem, stating that every right triangle has side lengths satisfying the...
under-performing. The name comes from the formula's resemblance to the Pythagoreantheorem. The basic formula is: W i n R a t i o = runs scored 2 runs scored...
as its diameter. This is Thales' theorem. The legs and hypotenuse of a right triangle satisfy the Pythagoreantheorem: the sum of the areas of the squares...
many mathematical and scientific discoveries, including the Pythagoreantheorem, Pythagorean tuning, the five regular solids, the Theory of Proportions...
statements of the Pythagoreantheorem, both in the case of an isosceles right triangle and in the general case, as well as lists of Pythagorean triples. In...
The Pythagorean trigonometric identity, also called simply the Pythagorean identity, is an identity expressing the Pythagoreantheorem in terms of trigonometric...
Cartesian coordinates of the points using the Pythagoreantheorem, and therefore is occasionally called the Pythagorean distance. These names come from the ancient...
are less than two right angles." (Book I proposition 17) and the Pythagoreantheorem "In right-angled triangles the square on the side subtending the...
equilateral triangle as a {\displaystyle a} , we can determine using the Pythagoreantheorem that: The area is A = 3 4 a 2 , {\displaystyle A={\frac {\sqrt {3}}{4}}a^{2}...
BC). All of these texts mention the so-called Pythagorean triples, so, by inference, the Pythagoreantheorem seems to be the most ancient and widespread...
catheti (singular: cathetus) of the triangle. Right triangles obey the Pythagoreantheorem: the sum of the squares of the lengths of the two legs is equal to...
setting of the geometric mean theorem there are three right triangles △ABC, △ADC and △DBC in which the Pythagoreantheorem yields: h 2 = a 2 − q 2 h 2 =...
in ancient times for his supposed mathematical achievement of the Pythagoreantheorem. Pythagoras had been credited with discovering that in a right-angled...
an approximation of the square root of 2 and the statement of the Pythagoreantheorem. Baudhayana's Śrauta sūtras related to performing Vedic sacrifices...
the third square. This process can be continued indefinitely. The Pythagoreantheorem that a 2 + b 2 = c 2 {\displaystyle a^{2}+b^{2}=c^{2}} can be proven...
corollaries to Thales's theorem. Pythagoras established the Pythagorean School, which is credited with the first proof of the Pythagoreantheorem, though the statement...
statement of the theorem proved is Theorem — The set {1, . . . , 7824} can be partitioned into two parts, such that no part contains a Pythagorean triple, while...
There is also the mathematical proof given in the treatise for the Pythagoreantheorem. The influence of The Nine Chapters greatly assisted the development...
problems on the Papyrus may suggest that the ancient Egyptians knew the Pythagoreantheorem. The Berlin Papyrus 6619 is an ancient Egyptian papyrus document...