Ül 2.

S_2=39

S_1\mathrm{=}8

S_3=9

S_4=x

\mathbf{Lahendus:} \; S_{BCE}=S_{AFD}+S_{FBC}=\frac{1}{2}S_{ABCD}.\ 
\mathrm{Tähistades} \;  S_{EHG}=a, \; S_{IBC}=b \; \mathrm{ja} \;  S_{CGHI}=x,\ 
\mathrm{saame \; võrrandi:} \
a+x+b=(39+a+8)+(9+b).\
\mathrm{Siit} \; x=39+8+9 =56.\
\mathrm{Üldiselt,  \; kui}\; E∈AD\;\mathrm{ja}\;F∈AB,\
\mathrm{siis  \; kehtib  \; valem:} \;  \; S_1+S_2+S_3=S_4.

C

A

B

D

F

E

G

H

I

b

a

A = Intersect(xAxis, yAxis)
B: (5.5, 0)
C: (6.5, 3.5)
D: (1, 3.5)
q1, a, b, c, d = Polygon(A, B, C, D)
F = Point(a)
E = Point(d)
f = Segment(B, E)
h = Segment(D, F)
g = Segment(C, E)
i = Segment(F, C)
G = Intersect(h, g)
H = Intersect(f, h)
I = Intersect(f, i)
t1, j, k, l, m = Polygon(A, F, H, E)
t2, n, p, q = Polygon(E, G, D)
t3, e, f_1, g_1, h_1 = Polygon(C, G, H, I)
t4, r, s, t = Polygon(F, B, I)
Export_2: (13.4, 3.8)
Export_1: (-0.3, -0.45)