Create the page "Right angles" on this wiki! See also the search results found.

Page title matches

• Asymptote: Marking Angles
  You can use the olympiad package to create nice marks for the angles. There also exists a command called rightanglemark to create a right angle.
  2 KB (313 words) - 01:23, 6 March 2019
• Exterior angles
  28 bytes (3 words) - 18:40, 8 March 2014
• Complementary angles
  ...gle, <math>\angle BAC</math> and <math>\angle CAD</math> are complementary angles to each other. Either of two angles whose sum is <math>90^{\circ}</math>
  1 KB (207 words) - 08:57, 7 June 2023
• Angles
  18 bytes (2 words) - 14:39, 8 May 2021
• Coterminal angles
  ...a multiple of <math>360^{\circ} = 2\pi \, \mathrm{rad}</math>. Coterminal angles are equivalent in the [[plane]] and share the same values of all [[Trigonom
  312 bytes (43 words) - 13:26, 12 March 2022
• Vertical Angles
  ...by two intersecting lines. By the [[Vertical Angle Theorem]], all vertical angles are equal.
  151 bytes (21 words) - 18:04, 4 September 2024
• Directed angles
  '''Directed Angles''' is a method to express [[angles]] that can be very useful in angle chasing problems where there are configu ...appear in clockwise order, and '''negative''' otherwise, then we take the angles modulo <math>180^{\circ}</math> (or modulo <math>\pi</math>).
  4 KB (657 words) - 20:52, 25 December 2024

Page text matches

• Geometric inequality
  ...eralization of the [[Pythagorean Theorem]]. The Theorem states that in a [[right triangle]] with sides of length <math>a \leq b \leq c</math> we have <math> ...y]]: <math>\frac{\sin{A}+\sin{B}+\sin{C}}{3}\le \sin{\left(\frac{A+B+C}{3}\right)}=\frac{\sqrt{3}}{2}</math>
  7 KB (1,300 words) - 01:11, 28 October 2024
• Orthic triangle
  [[Image:Acute_orthic_triangle.png|thumb|right|300px|Case 1: <math>\triangle ABC</math> is acute.]] [[Image:Obtuse_orthic_triangle.png|thumb|right|300px|Case 2: <math>\triangle ABC</math> is obtuse.]]
  8 KB (1,408 words) - 09:39, 10 July 2024
• Triangle
  {{asy image|<asy>draw((0,1)--(2,0)--(3,2)--cycle);</asy>|right|A triangle}} ...quiangular]]. Note that all equilateral triangles are [[similar]]. All the angles of equilateral triangles are <math>60^{\circ}</math>
  4 KB (535 words) - 18:58, 31 January 2025
• Stewart's Theorem
  Because angles <math>\angle ADB</math> and <math>\angle CDA</math> are [[supplementary]], <math>D: \left(0, \frac{n}{m+n},\frac{m}{m+n}\right)</math>
  4 KB (709 words) - 19:22, 18 February 2025
• Circle
  |right|A circle}} ...of a diameter and a third distinct point on the circle as the vertex is a right angle.
  9 KB (1,510 words) - 19:56, 16 January 2025
• Square (geometry)
  ...hich all [[edge|sides]] have equal length and all [[angle | angles]] are [[right angle]]s.
  1 KB (170 words) - 18:31, 3 September 2024
• Ptolemy's Inequality
  ...h>BAP </math> and <math>BDC </math> are similar, this would imply that the angles <math>BAC </math> and <math>BDC </math> are [[congruent]], i.e., that <math
  3 KB (602 words) - 09:01, 7 June 2023
• Polygon
  ...r irregular. A polygon is regular if all sides are the same length and all angles are [[congruent]]. == Angles in Polygons ==
  2 KB (372 words) - 19:04, 30 May 2015
• Law of Cosines
  In the case that one of the angles has measure <math>90^\circ</math> (is a [[right angle]]), the corresponding statement reduces to the [[Pythagorean Theorem] ===Right Triangle===
  6 KB (1,003 words) - 00:02, 20 May 2024
• Roots of unity
  ...but once we get to <math> k > n-1 </math>, we start getting [[coterminal]] angles. ...ht) + i\sin\left(\frac{2\pi k}n\right) = \mathrm{cis }\left(\frac{2\pi k}n\right). </math>
  3 KB (558 words) - 21:36, 11 December 2011
• Angle bisector
  ...le bisector of one angle and the external angle bisectors of the other two angles all intersect at an [[excenter]] of the triangle.
  3 KB (575 words) - 15:27, 19 March 2023
• Law of Sines
  ...f cosines]] and the [[law of tangents]] can be used to determine sides and angles. The law of sines can also be used to determine the [[circumradius]], anoth ...le BOD = \angle COD = \theta </math>. We can use simple trigonometry in [[right triangle]] <math> \triangle BOD </math> to find that
  4 KB (658 words) - 21:52, 4 February 2025
• Geometry
  ...initely, meet on that side on which are the angles less than the two right angles.''
  3 KB (478 words) - 01:52, 25 August 2024
• Area
  Drawing the [[apothem]] creates two [[right triangle]]s, each with an [[angle]] of <math>\frac{180}{n}^{\circ}</math> a <math>K = \frac1{2}\sqrt{a^2 c^2 - \left(\frac{a^2 + c^2 - b^2}{2}\right)^2} </math>
  7 KB (1,185 words) - 20:48, 25 November 2024
• Trigonometry
  '''Trigonometry''' is the study of relations between the side lengths and angles of triangles through the '''trigonometric functions'''. It is a fundamental ...ned in several equivalent ways. The definition usually taught first is the right triangle definition, for its ease of access. An intermediate to olympiad ge
  8 KB (1,228 words) - 15:40, 10 January 2025
• Incenter
  2 KB (381 words) - 19:38, 24 November 2011
• Rectangle
  A '''rectangle''' is a [[quadrilateral]] in which all [[angle]]s are [[right angle]]s.
  782 bytes (108 words) - 13:36, 6 March 2022
• Parallelogram
  * Consecutive angles are [[supplementary]].
  910 bytes (122 words) - 21:48, 13 November 2024
• Rhombus
  * If all of a rhombus' [[angle]]s are [[right angle]]s, then the rhombus is a [[square (geometry) | square]]. ...<math>\angle B\cong\angle D</math>. The same can be done for the two other angles, so <math>\angle A\cong\angle C</math>.
  3 KB (490 words) - 15:30, 22 February 2024
• Kite
  784 bytes (122 words) - 13:09, 22 July 2024

View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)