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Arbitrary Triangle Calculator

side a:
side b:
side c:
angle A:  
angle B:  
angle C:  
result
area: perimeter:
circumradius: Inscribed circle radius:
The height of side A: The height of side b:
The height of side C: a corner bisector:
b corner bisector: c corner bisector:
a side median line: b side median line:
c side median line:  

When the coordinates of the three points of the triangle are known, input the coordinates of the three points:

X Y  
A :  
B :  
C :  

The shape of a closed figure (including its internal area) composed of three non collinear points on a plane and the line segments connecting each two points is called a triangle. Each line segment that makes up a triangle is called an edge of the triangle. The common endpoints of adjacent sides are called the vertices of a triangle. The angle between adjacent sides is called the interior angle of a triangle, abbreviated as the angle of a triangle. The angle between the extension of one side of a triangle and its adjacent side is called the outer angle of the triangle. The triangle with vertices A, B, and C is denoted as △ ABC and pronounced as triangle ABC.

The shape formed by three straight lines on a plane or three curved lines on a sphere is called a plane triangle; The shape formed by three arcs is called a spherical triangle, also known as a triangle. △ABC..