100 Things Avalanche Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

100 Things Avalanche Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

Matematika sudut bertolak belakang

sudut bertolak belakang

Jawaban:

x + 60° = 180° (karena garis lurus)

x = 180°-60°

x = 120°

y = besar sudut yang berseberangan besarnya sama

y = 60°

z = besar sudut yang berseberangan besarnya sama

z = 120°

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