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Verified answer
S1+S2+S3=1802x+40+x+20+3x=180
6x=180-60
6x=120
x=20 ( C Segitiga Lancip )
= ( 2x + 40 )° + ( x + 20 )° + 3x°
= ( 6x + 60 )°
6x = 180° - 60°
= 120°
x = 120 ÷ 6 = 20°
Jadi ,
=> <A = ( 2x + 40 )° = ( ( 2 × 20 ) + 40 = 40 + 40 )° = 80°
=> <B = ( x + 20 )° = ( 20 + 20 )° = 40°
=> <C = 3x° = ( 3 × 20 )° = 60°
Jika Dilihat Dari Semua Sudut , Bisa Dikatakan Segitiga Tersebut Adalah Segitiga Lancip Karena Ketiga Sudut Nya Termasuk Sudut Lancip
JAWABAN => B . SEGITIGA LANCIP
#SEMOGAMEEMMBAANNTUU ^_^