S A S → A S A (A
_{i}
opposite S
_{i}
)
s1 =
a2 =
s3 =
a1 =
s2 =
a3 =
area =
If you have to put a coefficient using some function symbol (for example 1/5, √2), put it in a numerical form (0.2, 1.414213562373095), for example using
this
examples