Since \(x + y + z = 180, x + z = 135\). In the middle triangle, you can see that \(3x = 180\), so \(x = 60\). This means that \(60 + z = 135\) so \(z = 75\).
Since \(x + y + z = 180, x + z = 135\). In the middle triangle, you can see that \(3x = 180\), so \(x = 60\). This means that \(60 + z = 135\) so \(z = 75\).
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