Perhatikan gambar layang layang berikut. Hitunglah: A. Besar <A; B. Besar <B; C. Besar <C. pakai cara yaa!!

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1 Jawaban

  • <A + <B + <C + <D = 360°
    5y + 10 + 11y -2 + 2y + 6 + 11y - 2 = 360°
    29y + 12 = 360
    29y = 360-12
    29y = 348
    y = 348/29
    y = 12 °

    a. <A = 5y + 10
    =5 × 12 + 10
    = 60+10
    =70°

    b. <B = 11y-2
    = 11.12 - 2
    = 132 - 2
    = 130°

    c. <C =2y+6
    =2 × 12 + 6
    24 + 6
    =30°

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