Question

calculate the angle a ​

Answer 1

Answer:

112

Step-by-step explanation:

x=112 ( opposite angles are equal)

Answer 2

Answer:

angle a = 67°

Step-by-step explanation:

angle DCB = 90°

angle ACB = angle ACD = 45°

angle XCD + angle CXD + angle CDX = 180°

45° + 112° + angle CDX = 180°

angle CDX = 180° - 157°

angle CDX = 23°

angle CDY + angle YCD + angle CYD = 180°

23° + 90° + a =180°

113° + a = 180°

a = 180° - 113°

a = 67°