Adjacent angles: Difference between revisions
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In [[geometry]], '''adjacent angles''', often shortened as '''adj. ∠s''', are [[angle]]s that have a common ray coming out of the vertex going between two other rays, with no overlap of the regions "enclosed" by the two angles. In other words, they are angles that are side by side, or adjacent. |
In [[geometry]], '''adjacent angles''', often shortened as '''adj. ∠s''', are [[angle]]s that have a common ray coming out of the vertex going between two other rays, with no overlap of the regions "enclosed" by the two angles. In other words, they are angles that are side by side, or adjacent. |
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== Complementary adjacent angles == |
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A pair of angles is [[complementary angles|complementary]] if the sum of their measures is 90°. |
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A pair of angles is [[supplementary angles|supplementary]] if the sum of their measures is 180°. An example would be: Angle C is 40° and Angle D is 140°. Because angle C and D both add up to 180°, they are supplementary angles. |
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An angle with a ray connected to a common point down the center. In geometry, two angles are adjacent angles if they share a common vertex and side, but have no common interior points. |
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== External links == |
== External links == |
Revision as of 21:28, 7 November 2013
It has been suggested that this article be merged with Complementary angles, Supplementary angles, Vertical angles and Transversal (geometry) to Special angle relationships. (Discuss) Proposed since December 2011. |
In geometry, adjacent angles, often shortened as adj. ∠s, are angles that have a common ray coming out of the vertex going between two other rays, with no overlap of the regions "enclosed" by the two angles. In other words, they are angles that are side by side, or adjacent.
External links
- Complementary Angles animated demonstration. With interactive applet
- Supplementary Angles animated demonstration. With interactive applet
- Angle definition pages with interactive applets that are also useful in a classroom setting. Math Open Reference