Help With This Questions Please

label Algebra
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schedule 1 Day
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Jun 10th, 2015

Thank you for the opportunity to help you with your question!

In this question :

180 - z  =w    

x +y + z= 180

x = 180 - y - z

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 10th, 2015

Step 1: m∠x + m∠y + m∠z = 180 degrees (sum of angles of a triangle)
Step 2: m∠w − m∠z = 90 degrees (corresponding angles)
Step 3: Therefore, m∠x + m∠y + m∠z = m∠w + m∠z
Step 4: So, m∠x + m∠y = m∠w

In which step did the student first make a mistake and how can it be corrected?

Jun 10th, 2015

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