Question

find the unknown angles marked here also explain step by step that I can write in my fair copy​

Answer 1

Answer:

Answer in above attachment

Answer 2

Answer:

∆BDC =180°

<BDC = 90°

<BCD = 180°- 80°+90°=10°

y°=10°

<BAC =180°-80°+10°=90°

x°=90°

Step-by-step explanation:

it's your answer