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  • ...ius <math>r > s</math> is tangent to both axes and to the second and third circles. What is <math>r/s</math>?
    2 KB (307 words) - 15:30, 30 March 2024
  • * [[Math circles]] -- There are many in California.
    4 KB (514 words) - 04:02, 21 September 2023
  • * [http://www.geometer.org/mathcircles/ Tom Davis's] site for [[math circles]] topics. * [http://www.geometer.org/mathcircles/ Tom Davis's] site for [[math circles]] topics.
    4 KB (516 words) - 03:01, 13 April 2023
  • ...//www.amazon.com/exec/obidos/ASIN/0821804308/artofproblems-20 Mathematical Circles] -- A wonderful peak into Russian math training.
    24 KB (3,177 words) - 12:53, 20 February 2024
  • ...around North America. Inspired by Eastern European teaching models, math circles often take a problem-discussion approach to teaching and learning [[mathema == Math Circles by City ==
    3 KB (436 words) - 18:35, 26 August 2021
  • * [[Math circles]]
    713 bytes (94 words) - 13:36, 10 June 2008
  • |[[Toronto Math Circles]] (Toronto Math Circles B1)
    19 KB (2,632 words) - 14:31, 12 June 2022
  • ==Lines in Circles== *How many circles with radius <math>r</math> can we fit around a circle with radius <math>r</
    9 KB (1,555 words) - 20:05, 2 November 2023
  • *Let <math> w_1 </math> and <math> w_2 </math> denote the circles <math> x^2+y^2+10x-24y-87=0 </math> and <math> x^2 +y^2-10x-24y+153=0, </ma
    5 KB (892 words) - 21:52, 1 May 2021
  • 327 bytes (41 words) - 22:27, 24 April 2008
  • ...n use properties of similarity. Additionally, similarity (especially with circles) where parallel lines are used can indicate that homothety can be used, and
    3 KB (532 words) - 01:11, 11 January 2021
  • 6 KB (1,181 words) - 22:37, 22 January 2023
  • Eight circles of diameter 1 are packed in the first quadrant of the coordinate plane as s
    7 KB (1,173 words) - 03:31, 4 January 2023
  • ...ed circles splitting into congruent areas, and there are an additional two circles on each side. The line passes through <math>\left(1,\frac 12\right)</math> Assume that if unit [[square]]s are drawn circumscribing the circles, then the line will divide the area of the [[concave]] hexagonal region of
    4 KB (731 words) - 17:59, 4 January 2022
  • ...ers that are <math>\tfrac{4}{3}</math> units apart. Two externally tangent circles <math>\omega_1</math> and <math>\omega_2</math> of radius <math>r_1</math>
    12 KB (1,784 words) - 16:49, 1 April 2021
  • .../math> and <math> \overline{BC}</math> are common external tangents to the circles. What is the area of hexagon <math> AOBCPD</math>?
    13 KB (2,058 words) - 12:36, 4 July 2023
  • ...nally tangent circles, as shown. What is the sum of the areas of the three circles? ...and <math>8</math>, respectively. A common internal tangent intersects the circles at <math>C</math> and <math>D</math>, respectively. Lines <math>AB</math> a
    15 KB (2,223 words) - 13:43, 28 December 2020
  • ...ius <math>r > s</math> is tangent to both axes and to the second and third circles. What is <math>r/s</math>?
    13 KB (1,971 words) - 13:03, 19 February 2020
  • ...ly tangent to each other, and internally tangent to circle <math>D</math>. Circles <math>B</math> and <math>C</math> are congruent. Circle <math>A</math> has
    13 KB (1,953 words) - 00:31, 26 January 2023
  • ...t circle is tangent to the six circles that surround it, and each of those circles is tangent to the large circle and to its small-circle neighbors. Find the Let <math>C_1</math> and <math>C_2</math> be circles defined by <math>(x-10)^2 + y^2 = 36</math> and <math>(x+15)^2 + y^2 = 81</
    12 KB (1,792 words) - 13:06, 19 February 2020

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