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if AE=AF
THEN,
ANGLE AEF=EFA ANGLE=2°
EFC LINE
Y +b=180
73°+b=180
b=180-73
b=107°
in triangle AEF
a + E +F =180
a=180-(73+73)
a=34
a +d+c =angle A
34°+25°+c =87°
59°+c=87
c=87-59
c = 28°
a=34°
b=102°
c=28°
d=25°
THEN,
ANGLE AEF=EFA ANGLE=2°
EFC LINE
Y +b=180
73°+b=180
b=180-73
b=107°
in triangle AEF
a + E +F =180
a=180-(73+73)
a=34
a +d+c =angle A
34°+25°+c =87°
59°+c=87
c=87-59
c = 28°
a=34°
b=102°
c=28°
d=25°
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