Respuesta :

Answer:

77

Step-by-step explanation:

So first off, we know that those two triangles are congruent triangles, so those have the same measures. All angles have the same measures. We also know that all angles equal to 180 degrees.

So imagine putting them together:

So then you do 57+ 46=103

180-103=77

Hence the measure of z is 77 degrees

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