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Jumlah sudut = 180° (karena bersuplemen)
maka kita cari nilai x, yaitu
180 = (x + 10) + 4x
180 = x + 10 + 4x
180 = 5x + 10
180 - 10 = 5x
170 = 5x
x = 170/5
x = 34
Besar sudut ∠ABD
= x + 10
= 34 + 10
= 44°
Besar sudut ∠CBD
= 4x
= 4(34)
= 4 × 34
= 136°
Jawaban:
a. x = 34°
b. ABD = 44°
c. CBD = 136°
Penjelasan dengan langkah-langkah:
a. x + 10 + 4x = 180°
5x + 10 = 180°
5x = 180 - 10
5x = 170
b. ABD = x + 10
c. CBD = 4x
= 4.34
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Penyelesaian
______________________________
Jumlah sudut = 180° (karena bersuplemen)
maka kita cari nilai x, yaitu
180 = (x + 10) + 4x
180 = x + 10 + 4x
180 = 5x + 10
180 - 10 = 5x
170 = 5x
x = 170/5
x = 34
Besar sudut ∠ABD
= x + 10
= 34 + 10
= 44°
Besar sudut ∠CBD
= 4x
= 4(34)
= 4 × 34
= 136°
Jawaban:
a. x = 34°
b. ABD = 44°
c. CBD = 136°
Penjelasan dengan langkah-langkah:
a. x + 10 + 4x = 180°
5x + 10 = 180°
5x = 180 - 10
5x = 170
x = 34
b. ABD = x + 10
= 34 + 10
= 44°
c. CBD = 4x
= 4.34
= 136°