• Thumbnail for Thales's theorem
    In geometry, Thales's theorem states that if A, B, and C are distinct points on a circle where the line AC is a diameter, the angle ∠ ABC is a right angle...
    16 KB (1,954 words) - 16:17, 28 July 2024
  • Thumbnail for Thales of Miletus
    Thales is the namesake of Thales's theorem, and the intercept theorem can also be known as Thales's theorem. Thales was said to have calculated the heights...
    61 KB (7,125 words) - 19:25, 25 July 2024
  • The intercept theorem, also known as Thales's theorem, basic proportionality theorem or side splitter theorem, is an important theorem in elementary geometry...
    20 KB (2,069 words) - 08:53, 31 August 2024
  • Thumbnail for Perpendicular
    line g at or through the point P using Thales's theorem, see the animation at right. The Pythagorean theorem can be used as the basis of methods of constructing...
    15 KB (2,295 words) - 00:19, 23 June 2024
  • Thumbnail for Right triangle
    hypotenuse as its diameter. This is Thales' theorem. The legs and hypotenuse of a right triangle satisfy the Pythagorean theorem: the sum of the areas of the...
    18 KB (2,951 words) - 15:04, 12 August 2024
  • Thumbnail for Right angle
    connects the two measured endpoints) of exactly five units in length. Thales' theorem states that an angle inscribed in a semicircle (with a vertex on the...
    7 KB (839 words) - 04:50, 10 April 2024
  • Thumbnail for Lill's method
    reciprocals of the original roots. Lill's method can be used with Thales's theorem to find the real roots of a quadratic polynomial. In this example with...
    10 KB (1,214 words) - 11:26, 30 July 2024
  • Thumbnail for Euclid
    mathematicians, including Eudoxus, Hippocrates of Chios, Thales and Theaetetus, while other theorems are mentioned by Plato and Aristotle. It is difficult...
    44 KB (4,312 words) - 18:33, 11 July 2024
  • ibn Qurra's theorem (amicable numbers) Thales's theorem (geometry) The duality theorem (topology) Thébault's theorem (geometry) Theorem of de Moivre–Laplace...
    73 KB (6,015 words) - 12:17, 2 August 2024
  • Proclus, a later Athenian philosopher, attributed the theorem now known as Thales's theorem to Thales. He is also known for being the first to claim that...
    80 KB (10,888 words) - 02:19, 24 August 2024
  • corollaries to Thales's theorem. Pythagoras established the Pythagorean School, which is credited with the first proof of the Pythagorean theorem, though the...
    100 KB (9,886 words) - 03:41, 24 August 2024
  • Thumbnail for Euclidean geometry
    intuitively appealing axioms (postulates) and deducing many other propositions (theorems) from these. Although many of Euclid's results had been stated earlier...
    58 KB (7,005 words) - 02:24, 31 August 2024
  • community 6001 Thales, a main-belt asteroid Thales (crater), a crater on the Moon Thales' theorem, a theorem used in geometry Thales' theorem, (not to be...
    1 KB (199 words) - 15:52, 4 December 2023
  • Thumbnail for Greek mathematics
    and other subjects, coming up with the proof of what is now called Thales' Theorem. An equally enigmatic figure is Pythagoras of Samos (c. 580–500 BC)...
    35 KB (3,680 words) - 02:10, 19 August 2024
  • Thumbnail for List of trigonometric identities
    is constructed to have a diameter of length one, as shown here. By Thales's theorem, ∠ D A B {\displaystyle \angle DAB} and ∠ D C B {\displaystyle \angle...
    81 KB (12,163 words) - 19:26, 6 September 2024
  • Thumbnail for Pythagorean theorem
    In mathematics, the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle...
    92 KB (12,566 words) - 06:51, 6 September 2024
  • Thumbnail for Squaring the circle
    proven to be impossible, as a consequence of the Lindemann–Weierstrass theorem, which proves that pi ( π {\displaystyle \pi } ) is a transcendental number...
    45 KB (4,916 words) - 23:41, 24 August 2024
  • Thumbnail for Transversal (instrument making)
    vernier scales. This method is based on the Intercept theorem (also known as Thales's theorem). Transversals were used at a time when finely graduated...
    12 KB (1,322 words) - 08:56, 15 April 2024
  • Thumbnail for Mathematician
    deductive reasoning applied to geometry, by deriving four corollaries to Thales's theorem. The number of known mathematicians grew when Pythagoras of Samos (c...
    20 KB (2,274 words) - 13:10, 30 August 2024
  • Thumbnail for Inscribed angle
    inscribed angle theorem is used in many proofs of elementary Euclidean geometry of the plane. A special case of the theorem is Thales' theorem, which states...
    12 KB (1,352 words) - 23:04, 7 September 2024
  • Thumbnail for Arbelos
    ∠AEC are right angles because they are inscribed in semicircles (by Thales's theorem). The quadrilateral ADHE therefore has three right angles, so it is...
    10 KB (1,047 words) - 01:27, 10 January 2024
  • undefinability theorem Tarski's axioms  See also: List of things named after Alfred Tarski Mathematical logic, Geometry Alfred Tarski Thales's theorem Geometry...
    21 KB (100 words) - 15:29, 13 July 2023
  • Thumbnail for Geometric mean theorem
    In Euclidean geometry, the geometric mean theorem or right triangle altitude theorem is a relation between the altitude on the hypotenuse in a right triangle...
    10 KB (1,320 words) - 16:15, 7 September 2024
  • group in GCSE mathematics. These include: Inscribed angle theorem. Thales' theorem, if A, B and C are points on a circle where the line AC is a diameter...
    819 bytes (131 words) - 21:42, 10 February 2024
  • Thumbnail for Apollonian circles
    “coaxial.” Akopyan & Zaslavsky (2007), p. 59. Schwerdtfeger (1962, pp. 30–31, Theorem A). Dominici; et al. (2021), "Full-Bloch beams and ultrafast Rabi-rotating...
    10 KB (1,240 words) - 18:25, 2 July 2024
  • Thumbnail for Semicircle
    geometric region that further includes all the interior points. By Thales' theorem, any triangle inscribed in a semicircle with a vertex at each of the...
    5 KB (596 words) - 11:11, 4 September 2024
  • Sanskrit Vyākaraṇa predates Pāṇini). 600 BC: Thales of Miletus is credited with proving Thales's theorem. 600 BC: Maharshi Kanada gives the ideal of the...
    91 KB (10,347 words) - 07:44, 8 September 2024
  • Thumbnail for Triangle
    of the circumcircle, the circle passing through all three vertices. Thales' theorem implies that if the circumcenter is located on the side of the triangle...
    49 KB (5,964 words) - 19:16, 2 September 2024
  • Thumbnail for Law of sines
    Law of sines (redirect from Sine theorem)
    and thus ∠ A B D = 90 ∘ {\displaystyle \angle ABD=90^{\circ }} , by Thales's theorem. Since △ A B D {\displaystyle \triangle ABD} is a right triangle, sin...
    25 KB (3,867 words) - 00:51, 22 August 2024
  • Thumbnail for Modern influence of Ancient Greece
    Thales is the namesake of Thales's theorem, and the intercept theorem can also be known as Thales's theorem. Thales was said to have calculated the heights...
    124 KB (14,691 words) - 00:19, 4 July 2024