Triangle

Side length a
Side length b
Side length c
Side length a
Side length b
Side length c
Perimeter p=a+b+c
area A
Height h_a
Height h_b
Height h_c
Angle alpha
Angle beta
Angle gamma
median line sqrt(2*(b*b+c*c)-a*a)/2
median line sqrt(2*(c*c+a*a)-b*b)/2
median line sqrt(2*(a*a+b*b)-c*c)/2
Radius of incircle 2A/(a+b+c)
Radius of out circle (abc)/((a+b+c)*2*r_i)
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