Trojuholnı́k 𝐴𝐵𝐶 je rozdelený úsečkami ako na obrázku. Úsečky 𝐷𝐸 a 𝐴𝐵 sú rovnobežné. Trojuholnı́ky 𝐶𝐷𝐻,
𝐶𝐻𝐼, 𝐶𝐼𝐸, 𝐹𝐼𝐻 majú rovnaký obsah, a to 8 dm2.
Zistite obsah štvoruholnı́ka 𝐴𝐹𝐻𝐷.
(obrázok trojuholníka je priložený)
Mne vyšiel výsledok: S = 24 dm2
(cez podobnosť trojuholníkov tam vidím 3x8 dm2 vo štvoruholníku AFHD). Je to správne? Za odpoveď vopred ďakujem.
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