Jawaban:
3x+2x+30°=180°
5x+30°=180°
5x=180°-30°
5x=150°
x=150°/5
x=30°
Maka Besar sudut ABD=Sudut ABE+Sudut EBD
=30°+3x
=30°+(3 x 30°)
=30°+90°
=120°
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Jawaban:
3x+2x+30°=180°
5x+30°=180°
5x=180°-30°
5x=150°
x=150°/5
x=30°
Maka Besar sudut ABD=Sudut ABE+Sudut EBD
=30°+3x
=30°+(3 x 30°)
=30°+90°
=120°