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Right triangle overview

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Right triangle

Scalene triangle overview

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Scalene triangle


Law of Sines: Sine law
Law of Cosines: Cosine law
For any angle:
Area of a triangle (A)
Area by Heron's formula:
Where s is half the perimeter
The area (A) of a triangle is also equal to half the base multiply by the height
Triangle inequality:

Right, isosceles and equilateral triangle table

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Similar triangles

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Triangle circumcircle

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Angles bisectors and incircle

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Triangle medians

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Triangle altitudes

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Ceva's theorem

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