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Lee S.

asked • 11/28/16

Given: line WXY, m<WXZ = 135°. Prove: m<ZXY = 45°

Statements
  1. line WXY
  2. m<WXY = 180°
  3. m<WXZ = 135°
  4. m<WXY = m<WXZ + m<ZXY
  5. 180° = 135° + m<ZXY
  6. 45° = m<ZXY
  7. m<ZXY = 45°
 
Reasons 
  1. Given
  2. Defintion of supplementary angles
  3. Given
  4.  
  5. Substitution property
  6.  
  7. Symmetric Property
 
Proof: Fill in the reasons (2) for the given statements and explain why please.

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