Matematika

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Besar sudut and adalh
Besar sudut and adalh

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  • ∠ABD + ∠CBD = 90°
    3x° + 2x° = 90°
    5x° = 90°
    x° = 90°/5
    x° = 18°

    ∠ABD = 3x°
    ∠ABD = 3(18°)
    ∠ABD = 54°

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