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

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

Matematika perhatikan gambardi samping.
Tentukan besar <DHE​

perhatikan gambardi samping.
Tentukan besar <DHE​

Jawaban:

<HDE = 180° - 110°

= 70°

<DEH = <CBD (sudut dlm berseberangan)

= 95°

<DHE = 180° - (70° + 95°)

= 180° - 165°

= 15°