Derived from a Sangaku (calculation tablet), the equal incircles theorem is one of the important theorems in the study of size, shape, relative position of figures, and the properties of space. It states that the incircles of triangles formed by any given ray are equal to the base line and those formed by every other ray.
Japan
China
Tokyo
Berlin
Sinh
Cosec
Sine
Tan
Twice the area of its hyperbolic sector
Half the area of its hyperbolic sector
Thrice the area of its hyperbolic sector
One quarter the area of its hyperbolic sector
Lateral angle
Hyperbolic inverse
Hyperbolic sector
Hyperbolic angle
Hyperbolic area
Hyperbolic sector
Hyperbolic function
Hyperbolic inverse
Ln b
Sin b
Ln c
Sin c
Hyperbolic triangle
Hyperbolic angle
Right triangle with one vertex at the origin
Third vertex on the hyperbola
4
3
2
1
Hyperbola
Hyperbolic angle
Cartesian plane
Hyperbolic sector
Foci
Loci
Radius
Ellipsis