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MATH WORDS,
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    A
  1. Abacus
  2. Abscissa
  3. Absolute Value
  4. Abundant Numbers
  5. Accumulate
  6. Accurate
  7. Achiral
  8. Acre
  9. Acute
  10. Ada, Computer Language
  11. Add
  12. Addend
  13. Adjacent
  14. Aeon
  15. Affine Geometry
  16. Agnesi's Witch curve
  17. Ahmes Papyrus
  18. Alabama Paradox - voting
  19. Alchemy
  20. Aleph-Null
  21. Algebra
  22. Algebraic Numbers
  23. Algorithm
  24. Aliquot Parts
  25. "All Models are Wrong" quote
  26. Altitude
  27. Altitude of triangle, Properties
  28. Amblygon
  29. Amicable Numbers or Pairs
  30. Amplitude
  31. Analemma
  32. Analogy
  33. Angle
  34. Angle Bisectors in a Triangle
  35. Angstrom (unit of length)
  36. Annual
  37. Annulus
  38. Annus Mirabilis - Newton's Miracle Year
  39. Anode - creation of the term
  40. Antares
  41. Antecedent
  42. Anti-Center
  43. Antiparallel
  44. Aphelion
  45. Apoapsis
  46. Apogee
  47. Apollonius Gasket
  48. Apollonius Point
  49. Apollonius Problem
  50. Apothem
  51. Apportionment
  52. Approval Voting
  53. Apse
  54. Apside
  55. Arbelos
  56. Arc
  57. Archimedes Square Dissection Puzzle
  58. Arc Sine or Sin-1
  59. Are
  60. Area
  61. Argand Diagrams
  62. Argument
  63. Arithmetic
  64. Arithmetical Frames; (old teaching devices)
  65. Arithmetic Books, Early American
  66. arithmetic Books, First North American
  67. Arms of a right triangle, blog about the development of the term
  68. Arrive
  69. Asses' Bridge
  70. Associative
  71. Astroid
  72. Astronaut
  73. Astronomical Unit / AU
  74. Asymptote
  75. Atlas
  76. Atom
  77. Aubel's Theorem
  78. Average
  79. Avoirdupois
  80. Axiom
  81. Axis

    82. B
  82. Babylonian Square Root Method
  83. Bacon, Francis; stained glass at Wren Library, Cambridge
  84. Bakhshali Manuscript
  85. Barometer
  86. Barrow, Isaac; stained glass at Trinity Chapel, Cambridge
  87. Barycenter
  88. Baryon
  89. Base
  90. Bayes' Theorem
  91. Bell Curve
  92. Bell's Numbers or Bell Numbers
  93. Benford's Law
  94. Bernoulli's Golden Theorem
  95. Bernoulli Numbers
  96. Bertrand's Postulate (a prime between n and 2n)
  97. The Big Bang
  98. bi-gon (two sided polygon?)
  99. Billion
  100. Bimedian of Quadrilateral
  101. Binary Numbers
  102. Binomial
  103. Binomial Coefficients
  104. Bisect
  105. Bisectors (ANGLE) in a Triangle
  106. Blackboard, History of
  107. Additional notes on History of Blackboards and slates
  108. Bode's Law
  109. Bounds and Butts (land measure)
  110. Borda Voting
  111. Borrow (in Subtraction)
  112. Bottle Imp Paradox
  113. Bowditch Curves
  114. Box Plot
  115. Braces {} as Grouping Symbols
  116. Brachystochrone
  117. Brackets as Grouping Symbols
  118. "Bracket X", or Bracket Function
  119. Brahmagupta's Formula
  120. Brahmagupta's Identity on the sums of two squares
  121. Brahmagupta's Multiplication method
  122. Butts and Bounds (land measure)
  123. The Bride's Chair
  124. Bridge of Asses
  125. Brocard's Problem
  126. Bruns Constant
  127. Bureau

    128. C
  128. C, symbol for Radians
  129. Caduceus
  130. Calculate / Calculus
  131. Calendar
  132. Camera / Camera obscura
  133. Cardinal
  134. Cardinality
  135. Carat
  136. Cardioid
  137. Caret
  138. Carmichael Numbers
  139. Carnot's Theorem
  140. Carroll's Logic Diagrams (by Lewis Carroll)
  141. Carry (arithmetic)
  142. Casting out nines
  143. Casting out elevens
  144. Catalan Numbers
  145. Catenary
  146. Cathetus
  147. Cathode - creation of the term
  148. Cauchy distribution
  149. Ceiling Function,
  150. Census
  151. Center
  152. Centroid or Center of Gravity
  153. Century
  154. Ceres
  155. Cesaro-Stolz Theorem
  156. Ceva's Theorem
  157. Cevian
  158. Chain or Gunter's Chain
  159. Chain Reaction
  160. Chaos
  161. Check
  162. Check methods for arithmetic
  163. Chebyshev's theorem.(a prime between n and 2n)
  164. Chie-no-ita, Chinese puzzle
  165. Chilihedron
  166. Chinese Checkers
  167. Chinese Postman's Problem
  168. Chinese Square Root Method
  169. Chiral
  170. Chi Square
  171. Choose
  172. Chord
  173. Circle
  174. Circuit
  175. Circulate Numbers
  176. Circumcenter
  177. Circumcircle
  178. Circumference
  179. Circumscribe
  180. Class
  181. cloff, commercial discount
  182. Clue
  183. Coefficient
  184. Collatz's Problem
  185. Collinear
  186. Combinations
  187. Commandino's Theorem
  188. Commutative
  189. Compass
  190. Complementary
  191. Complete Graph
  192. Complete Oriented Graph
  193. Complex Fraction
  194. Complex Numbers
  195. Component
  196. Composite & Compound
  197. Compute
  198. Concurrent
  199. Concyclic
  200. Condorcet Voting
  201. Cone
  202. Confidence Interval
  203. Confounding Variables (statistics)
  204. Congruent
  205. Congruent Numbers
  206. Conic Section
  207. Conic Surface
  208. Conjecture
  209. Conjugate
  210. Conjugate Angles
  211. Consequent
  212. Constant
  213. Contact Triangle
  214. Continuous
  215. Converse
  216. Convex
  217. Coordinates
  218. Corollary
  219. Correct
  220. Correlation
  221. Correlation Coefficient
  222. Cosecant
  223. Cosine
  224. Cosines, Law of
  225. Cosine Circle (2nd Lemoine)
  226. Cosmic Rays
  227. Cosmos
  228. Coss and Cossists
  229. Cotangent
  230. Cotes, Roger; stained glass at Trinity Chapel, Cambridge
  231. Counting Boards
  232. Counting Numbers
  233. Crafoord Mathematical Prize
  234. Cramer's Rule
  235. Crescent
  236. Critical Points
  237. Cube
  238. Cube roots, by hand
  239. Cuisenaire rods
  240. Cumulative
  241. Curator
  242. Curtate Cycloid
  243. Cusp
  244. Cybernetics
  245. Cyclic Quadrangles (Quadrilateral)
  246. Cycloid
  247. Cylinder
  248. Cylindrical Projection, MAP

    249. D
  249. Dart, type of quadrilateral
  250. Data/Datum
  251. Dean
  252. Decade
  253. Des Cartes' Circle Thm
  254. Decimal Fractions
  255. Decimal Point & Decimal Comma
  256. Decimal Repeat Bar
  257. Decrease
  258. Degree
  259. Degrees, Why 360 in a circle?
  260. de Gua's Theorem.
  261. Deltoid
  262. Denominator
  263. Derangement
  264. Derivative
  265. Derive
  266. Determinant
  267. Deviation
  268. Devil's Curve
  269. Diagonal
  270. Diagram
  271. Diameter
  272. Diamond
  273. Dice / Die
  274. Dido's Problem
  275. Difference
  276. Difference symbol "~"
  277. Digit
  278. Digital Root
  279. Digon (two sided polygon?)
  280. Dimension
  281. Di-graph or Directed Graph
  282. Discount
  283. Discriminant
  284. Distance
  285. Divide
  286. Dividend
  287. Divide, Symbols for
  288. Divisor
  289. divisor function, sigmakn
  290. Dodecagon
  291. Dodecahedron
  292. Domain
  293. Dollar
  294. Dollar Symbol $
  295. Dot as symbol for multiplication
  296. Double Dummy
  297. Dozen
  298. Drawers of Dirichlet
  299. Droz-Farny Theorem
  300. Duplation and Mediation

    301. E
  301. e for 2.71828...
  302. East
  303. Edge
  304. Egyptian Multiplication
  305. Einstein's Biggest Blunder
  306. Electricity
  307. Electron
  308. Ellipse
  309. Ellipsis
  310. Ellipsoid
  311. Empty Set
  312. Enantiomorphic
  313. End of proof symbol,
  314. Early American Math Textbooks
  315. Eon
  316. Eocene
  317. Eohippus
  318. Equal
  319. = , Equal Symbol
  320. Equation
  321. Equiangular
  322. Equilateral
  323. Equivalent
  324. Ether
  325. Euclid's Algorithm at Cut-the-Knot
  326. Euler Circuits
  327. Euler Line
  328. Euler Path or Circuit
  329. Euler's Planer Graph Theorem (proof) V+F=E+2
  330. Excenter and Excircle
  331. Explementary
  332. Exponent
  333. Extrapolate

    334. F
  334. Factor & Factorial
  335. Factoring (as in "factoring a quadratic")
  336. Fagnano's Problem
  337. Fair division of Assets and Obligations, Discrete Math Notes
  338. February
  339. Fermat Point
  340. Fermat's Last Theorem
  341. Fermat's Little Theorem
  342. Feuerbach's Circle
  343. Fibonacci's Identity on the sums of two squares
  344. Fibonacci's Sequence
  345. Fields Medal
  346. The Fifteen Puzzle, a blog about that famous little sliding puzzle game that swept the world.... and a link to a FREE download to play.
  347. First
  348. Floor Function,
  349. Focus
  350. Forest (planer graph)
  351. Formula
  352. Forty, (why there is no "U" in,)
  353. Four
  354. Fourth Proportional
  355. Fractal
  356. Fraction
  357. Fractional Exponents
  358. Fraction Bar
  359. Frequency
  360. Friday
  361. Friendly Numbers
  362. Frustum
  363. Function
  364. Fundamental Counting Theorem
  365. Furlong (length)

    366. G
  366. Galaxy
  367. Galley method of Division
  368. Gallon
  369. Gallows Function,
  370. Gamma Function
  371. President Garfield's Pythagorean Proof
  372. Gas
  373. Gaudi Magic Square
  374. Gauging
  375. Gelosie Multiplication
  376. Geoboard
  377. Geocenter
  378. Geometric Mean
  379. Geometry
  380. Geometry, Royal Road to?
  381. Gergonne Point / Triangle
  382. Gibbous (phases of moon)
  383. Gilbert, Unit of measure
  384. Girard's Thm
  385. Gnomen
  386. Googol
  387. Gougu Rule
  388. Grad - angle measurement
  389. Grade (of road, etc.)
  390. Graham's Number
  391. Gram, unit of weight(mass)
  392. Graph
  393. Graph Paper
  394. Graphic Solutions to Quadratic Equations
  395. Graph Theory
  396. Grave, early unit for Kilogram
  397. Greater Than Symbol
  398. Greatest Common Factor, Using Euclid's Algorthm at Cut-the-Knot
  399. Greatest Integer Function
  400. Grebe Point
  401. Gross
  402. Gunter's chain"
  403. Gunter's scale"

    404. H
  404. Half, 1/2
  405. Half-Period
  406. Halma, board game
  407. Halmos symbol,
  408. Hamilton's Apportionment Method
  409. Hamiltonian Circuits
  410. Hanoi, Tower of Puzzle
  411. Harmonic Mean
  412. Harmonic Sequence
  413. Hash symbol, #
  414. Haversine
  415. Hawthorne Effect
  416. Heap Paradox
  417. Hectare
  418. Height
  419. HemiSphere
  420. Hein, Piet
  421. The Helen of Geometers
  422. Helium
  423. Helix
  424. Hermetic Seal
  425. Heron's Formula or Hero's Formula
  426. Heronian Mean
  427. Heron's Problem
  428. Heteroscedastic
  429. Hex, the game
  430. Hexdecimal
  431. Hinge
  432. Hippocrates Lune
  433. Hippocratic Oath
  434. Histogram /Histograph
  435. History, Notes on Math teaching
  436. Hoehn's Thm
  437. Hollerith Cards
  438. Homoscedastic
  439. Hoppity, old Enlish board game
  440. Horizon / Horizontal
  441. Hornbooks
  442. Horsepower
  443. Hour
  444. Houses and Utilities Problem (proof)
  445. Hubble (Unit of distance)
  446. Hundred
  447. Hyperbola
  448. Hyperbole
  449. Hypercube
  450. Hypocycloid of Four Cusps
  451. Hypocycloid of Three Cusps
  452. Hypodermic
  453. Hypotenuse

    454. I
  454. i for square root of -1
  455. identity and symbol ≡
  456. Ides
  457. Idiot
  458. IFF symbol
  459. Imaginary Numbers
  460. Incenter and Incircle
  461. Increase
  462. Increment
  463. Index
  464. Induction, Inductive Proof
  465. Inequality Symbols
  466. Infinitesimul
  467. Infinity
  468. Infinity Symbol
  469. Imperial Gallon
  470. Inscribe
  471. Int Function
  472. Integer
  473. Interpolate
  474. Interval
  475. interquartile range
  476. Inverse Sine or Sin-1
  477. Inverse Square Law
  478. Iodine
  479. Ion - creation of the term
  480. IQR
  481. Irrational Numbers
  482. Iridium
  483. Iris
  484. Ishango Bone
  485. Isogon - Isogonic Lines, Points, Symmetry
  486. Isometry
  487. Isomorphic
  488. Isomorphic symbol,
  489. Isoperimetric
  490. Isopleure, Isopleuron
  491. Isosceles
  492. Italian Method of Division

    493. J
  493. January
  494. Japanese Tangram type puzzle
  495. Jefferson's Apportionment Method
  496. Jerk
  497. Johnson's Theorem
  498. Josephus Problems
  499. Julia Set

    500. K
  500. Kaprekar Numbers
  501. Karat
  502. Kilogram Mass and Force
  503. Klein Bottle
  504. Kissing Circles Theorem
  505. Kite
  506. Knot, (Unit of speed)
  507. Knots and Knot Theory
  508. Kurschak's Theorem
  509. Kurtosis

    510. L
  510. Lame's Numbers
  511. Lattice Multiplication
  512. latus rectum
  513. lb, Pound
  514. Law of Cosines
  515. Law of Large Numbers
  516. Law of Sines
  517. Law of Tangents
  518. League (measure of distance)
  519. Leg
  520. Lemma
  521. Lemniscate
  522. Lemoine Point / Circles
  523. Lens (intersection of two circles)
  524. Leptokurtic
  525. Less Than Symbol
  526. l'Hospital's Rule
  527. Liar's Paradox
  528. Lies, Damned Lies, and Statistics
  529. Lill Circle, A Graphic Solution to Quadratic Equations
  530. Limacon
  531. Limit
  532. Line
  533. Lissajous Figures
  534. ln for natural logarithm
  535. Loculus of Archimedes
  536. Locus
  537. Logarithm
  538. Log-line (instrument for nautical speed)
  539. Long Ton
  540. Lotka's Law
  541. Loxodrome
  542. Lozenge
  543. Lucas Sequence
  544. Ludolph's Number
  545. Lune
  546. Lurking Variables (statistics)

    547. M
  547. "m" for Slope
  548. Macron
  549. Magic Squares
  550. Magnetic Declanation Map (first)
  551. Magnitude
  552. Maltitudes
  553. Mantissa
  554. Matrix
  555. Mars
  556. Mathbooks, Early American
  557. Mathematics
  558. Mathot's Point
  559. Maximum
  560. Mean
  561. Mean Proportional
  562. Measure
  563. Measuring Four Gallons using a Five and Three Gallon Jug, some history (Blog)
  564. Medial Triangle
  565. Median (Origin & statistics)
  566. Medians of a Triangle
  567. Menelaus' Thm
  568. Mercator Projection, MAP
  569. Mercury
  570. Merels, the game
  571. Merhkat
  572. Meter
  573. Metric Ton
  574. Mil or Mill (1/1000)
  575. Mile
  576. Million
  577. Minor
  578. Minuend
  579. Minus
  580. Minute
  581. Miquel's Point & Theorem
  582. Miquel's Pentagon Theorem
  583. Mobius Strip
  584. Mode
  585. Modulus
  586. Mollweide Equations
  587. Monge's Theorem on common tangents of circles
  588. Monge's Point
  589. Monomial
  590. Monte Carlo Method
  591. Months and their Names
  592. Morley's Theorem
  593. Morris, (Nine Men's-) the game
  594. Moscow Papyrus
  595. Mu, , for the average
  596. Multiple Factorial
  597. multiplicand
  598. Multiplication (Ancient/Old methods)
  599. multiplier
  600. multiply
  601. Myriad