side a = 12

angle C = 80.944

altitude of side b = 12 * sin(deg2rad( 80.944 ))

altitude of side b = 11.8504

where,

a = side a

b = side b

c = side c

P = perimeter

K = area

height = height

m = median

t = angle bisector

R = circumscribed circle radius

r = inscribed circle radius

s = semi perimeter

ta = angle bisector of side a

tb = angle bisector of side b

tc = angle bisector of side c

ma = median of side a

mb = median of side b

mc = median of side c

ha = altitude of side a

hb = altitude of side b

hc = altitude of side c

A = angle A

B = angle B

C = angle C

base = base