Penjelasan dengan langkah-langkah:
ABD = 180° - CBD
= 180° - 125°
= 55°
BDE = ABD + DEF
= 55° + 28°
= 83° (b)
Jawaban:
<DBA=180°-25°=55°
<BDE=<BDA+<DEF
= 55°+28°
= 83° (B)
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Penjelasan dengan langkah-langkah:
ABD = 180° - CBD
= 180° - 125°
= 55°
BDE = ABD + DEF
= 55° + 28°
= 83° (b)
Jawaban:
<DBA=180°-25°=55°
<BDE=<BDA+<DEF
= 55°+28°
= 83° (B)