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The final digit of a triangular number is 0, 1, 3, 5, 6, or 8, and thus such numbers never end in 2, 4, 7, or 9. A final 3 must be preceded by a 0 or 5; a final 8 must be preceded by a 2 or 7. In base 10 , the digital root of a nonzero triangular number is always 1, 3, 6, or 9.
The first American-made pocket-sized calculator, the Bowmar 901B (popularly termed The Bowmar Brain), measuring 5.2 by 3.0 by 1.5 inches (132 mm × 76 mm × 38 mm), came out in the Autumn of 1971, with four functions and an eight-digit red LED display, for US$240, while in August 1972 the four-function Sinclair Executive became the first ...
A right triangle ABC with its right angle at C, hypotenuse c, and legs a and b,. A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular, forming a right angle (1 ⁄ 4 turn or 90 degrees).
[1] An excircle or escribed circle [ 2 ] of the triangle is a circle lying outside the triangle, tangent to one of its sides and tangent to the extensions of the other two . Every triangle has three distinct excircles, each tangent to one of the triangle's sides.
Historias de Calculadora (in Spanish) – A list of calculator-spellable Spanish words, and Logo code to convert them to numbers The Ultimate List – An 824 word list and an extended 1455 word list of English words possible to display on an upside down calculator, HTML code to aid their creation plus three 'micro stories' using only the ...
[3] [4] The internal angle of an equilateral triangle are equal, 60°. [5] Because of these properties, the equilateral triangles are regular polygons. The cevians of an equilateral triangle are all equal in length, resulting in the median and angle bisector being equal in length, considering those lines as their altitude depending on the base ...
A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself. However, 4 is composite because it is a ...
Ralph George Macchio Jr. (/ ˈ m ɑː tʃ i oʊ / MAH-chee-oh, Italian:; born November 4, 1961) is an American actor.He is best known for playing Daniel LaRusso in four Karate Kid films (the 1984 film The Karate Kid and its sequels, The Karate Kid Part II in 1986, The Karate Kid Part III in 1989, and the upcoming Karate Kid: Legends in 2025), as well as in Cobra Kai (2018–2025), a sequel ...