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tensa zangetsu [6.8K]
3 years ago
9

I need help with this​

Mathematics
1 answer:
Svetllana [295]3 years ago
7 0

Answer:

m∠z = 106°

Step-by-step 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°

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