Jawaban dengan penjelasan:
180°
<K + <L + <M = 180°
40° + 2x° + 3x° = 180°
(hilangkan semua tanda derajatnya)
40 + 5x = 180
5x = 180 - 40
5x = 140
x = 140/5
x = 28
Besar tiap sudut
<K = 40°
<L = 2x° = 2(28)° = 56°
<M = 3x° = 3(28)° = 84°
Besar <KLM
= 40° + 56° + 84°
= 180°
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Jawaban dengan penjelasan:
180°
<K + <L + <M = 180°
40° + 2x° + 3x° = 180°
(hilangkan semua tanda derajatnya)
40 + 5x = 180
5x = 180 - 40
5x = 140
x = 140/5
x = 28
Besar tiap sudut
<K = 40°
<L = 2x° = 2(28)° = 56°
<M = 3x° = 3(28)° = 84°
Besar <KLM
= 40° + 56° + 84°
= 180°