Rectilinear angle (geometry): Difference between revisions
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imported>Miguel Adérito Trigueira (Added diagram) |
imported>Miguel Adérito Trigueira (Added diagram, link to Euclidean geometry) |
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[[Image:angle (geometry).png|frame|Diagram showing the terminology of an angle including arms (in red), vertex (in light blue) and angle (in green)]] | [[Image:angle (geometry).png|frame|Diagram showing the terminology of an angle including arms (in red), vertex (in light blue) and angle (in green)]] | ||
In [[Euclidean geometry]]: | |||
A '''rectilinear angle''' or '''angle''' is the "steepness" between two straight lines. The point at which the lines intersect is called the '''vertex'''. The parts of the line that extend from the vertex and surround the "steepness" are called the arms. | A '''rectilinear angle''' or '''angle''' is the "steepness" between two straight lines. The point at which the lines intersect is called the '''vertex'''. The parts of the line that extend from the vertex and surround the "steepness" are called the arms. | ||
Revision as of 03:28, 15 August 2008
.png)
Diagram showing the terminology of an angle including arms (in red), vertex (in light blue) and angle (in green)
A rectilinear angle or angle is the "steepness" between two straight lines. The point at which the lines intersect is called the vertex. The parts of the line that extend from the vertex and surround the "steepness" are called the arms.
This angle is measured in degrees (parts of 360). This angle can also be measured in radians.
There are various special types of angles: