Question

Nomor 17 tolong di jawab, pake cara :)

Answer 1

<CDB = <CBD

<CDB = 1/2 × (180-80)
= 1/2 × 100
= 50

<ADC = 180 - 50
= 130

<ACD = <CAD

<ACD = 1/2 × (180-130)
= 1/2 × 50
= 25 (B)