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TrianglesArea of a Triangle
There are numerous ways to determine the area of a triangle. Each calculation method depends on what information is already known about the triangle in question.
Given the height and width of a right triangle, the area is simply:
Given the height and and base edge length of any triangle, the area is similarly:
Given one angle and is adjacent lengths, the area is:
Given one side and its two adjacent angles, the area is:
Given all three side lengths, we use Heron's formula (aka Hero's formula):
Note that a circle inscribed within any triangle has the property:
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Geometry: Introduction | Geometry: Regular Polygons |