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matematika

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narysuj úseku SA, aby SA=5cm. sestroj kružnici k(S, r=25cm).pomoci kruzitka vyžínač body B a C tak, aby ležely na kružnici k (Ab) =4cm a (AC) =3cm. Narysuj trojúhelník ABC.

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Michaela P.
Michaela P. Contact
Posílám svůj postup a souhlasím s kolegou, že tam má být nejspíše r = 2,5 cm. Jak psal kolega, jsou 4 možná řešení (jedno mám na obrázku a pak další 3).
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Dobrý den,
nejdříve úsečku SA podle pravítka. Pak z jednoho toho bodu, S, kružnici, do kružítka 2,5 cm (pozor, máte napsané špatně zadání), narýsovat kružnici k. Pak ty body B,C pomocí kružítka promítneme na kružnici. Trojúhelníky sestrojíme pravítkem pospojováním ABC. Počet řešení je 4.
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