Question

I need help with this​

Answer 1

m∠z = 106°

Explanation:

From the figure attached,

By exterior angle theorem,

m∠z = a + 68°

By linear pair theorem,

m∠a + 142° = 180°

m∠a = 180° - 142°

= 38°

Therefore, m∠z = 38° + 68°

= 106°