Tolong cepat yaa, ingat menggunakan cara!
Penjelasan dengan langkah-langkah:
1) C
DCB = 180° – 80° = 100°
DAC = 180° – 100°
4x = 80°
x = 20°
< D = 180° – 5x
< D = 180° – 5(20°)
<D = 180° – 100°
< D = 80°
2) C
POQ = 2 x PRQ
POQ = 2 x 35°