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A triangle is formed by the coordinates A (2, 1), B (4, 1) and C (1, 6). Draw the image of the triangle after rotation through +90°. Give the coordinates of A¹B¹C¹ (4mks)

Mathematics

ScanSolve AI Answer

Answer

A'(-1, 2), B'(-1, 4), C'(-6, 1)

Step-by-step solution

4 steps

Huu hapa ni utatuzi wa swali la mzunguko:

  1. Bainisha sheria ya mzunguko.

    Mzunguko wa +90° (digrii 90 kinyume na mwelekeo wa saa) kuhusu asili (0,0) hubadilisha pointi (x,y)(x, y) kuwa (−y,x)(-y, x).

  2. Tumia sheria ya mzunguko kwa kila kipeo cha pembetatu.

    • Kwa kipeo A(2, 1): A′=(−1,2)A' = (-1, 2)
    • Kwa kipeo B(4, 1): B′=(−1,4)B' = (-1, 4)
    • Kwa kipeo C(1, 6): C′=(−6,1)C' = (-6, 1)
  3. Andika kuratibu za picha.

    Kuratibu za picha ya pembetatu A'B'C' ni:
    A′(−1,2)A'(-1, 2)
    B′(−1,4)B'(-1, 4)
    C′(−6,1)C'(-6, 1)

  4. Eleza jinsi ya kuchora pembetatu.

    Ili kuchora pembetatu asilia na picha yake:

    1. Chora mfumo wa kuratibu (x-axis na y-axis).
    2. Weka pointi A(2, 1), B(4, 1), na C(1, 6) kwenye grafu na uziunganishe ili kuunda pembetatu ABC.
    3. Weka pointi A'(-1, 2), B'(-1, 4), na C'(-6, 1) kwenye grafu hiyo hiyo na uziunganishe ili kuunda pembetatu A'B'C'.

    Kuratibu za picha ya pembetatu baada ya mzunguko wa +90° ni:

    A′(−1,2),B′(−1,4),C′(−6,1)A'(-1, 2), B'(-1, 4), C'(-6, 1)
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