TEOREEM:
Kolmnurga kesklõik on paralleelne kolmnurga
ühe küljega ja võrdub poolega sellest küljest. 

EF= \frac{14.91}{2}≈7.46 cm

FD=\frac{8.69}{2}≈4.35 cm

DE= \frac{9.01}{2}≈4.5 cm

Kolmnurga  \; DEF  \; pindala \;  on \;  võrdne  \; kolmnurga \;  ABC \frac{1}{4} pindalaga.

 

See  \; tähendab:
\frac{8.88 cm²}{35.51 cm²}=0.25=\frac{1}{4}

A = (1.32, -5.62)
B = (15.66, -1.52)
C = (7.36, 1.06)
t1, c, a, b = Polygon(A, B, C)
D = Midpoint(A, B)
E = Midpoint(B, C)
F = Midpoint(C, A)
t2, f, d, e = Polygon(D, E, F)
kaugusAB = Distance(A, B)
TekstAB: Name[A] + (Name[B]) + " = " + kaugusAB
kaugusBC = Distance(B, C)
TekstBC: Name[B] + (Name[C]) + " = " + kaugusBC
kaugusCA = Distance(C, A)
TekstCA: Name[C] + (Name[A]) + " = " + kaugusCA
kaugusDE = Distance(D, E)
TekstDE: Name[D] + (Name[E]) + " = " + kaugusDE
kaugusEF = Distance(E, F)
TekstEF: Name[E] + (Name[F]) + " = " + kaugusEF
kaugusFD = Distance(F, D)
TekstFD: Name[F] + (Name[D]) + " = " + kaugusFD
Punktt2 = PointIn(t2)
Punktt1 = PointIn(t1)
T1 = NaN