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Dané sú body X, Y, C (obr.). Zostrojte rovnoramenný trojuholník ABC s ramenami CA, CB, pre ktorý platí: 𝐴,𝐵∈𝑋𝑌,𝛾=30°
Dané sú množiny 𝐴={1,3,5},𝐵={2,4,6,8} Ktoré množiny sú zobrazeniami A na B, A do B, B na A a B do A? 𝑍1={[1,6][3,6][5,6]} 𝑍2={[1,2][3,4][1,8]} 𝑍3={[1,2][3,4]} 𝑍4={[2,1][4,3][6,5][8,1]}
Daná je úsečka AB. Napíšte všeobecnú rovnicu priamky, ktorá prechádza stredom úsečky AB a zviera s ňou uhol o veľkosti 45° ak 𝐴[4,2],𝐵[2,12].
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