Quiz (1 point)

• a = a
• if M is the midpoint of line AB, then distance AM = distance MB
• if distance AB = x, then distance BA = x
• if (distance AB = distance DE) and (distance BC = distance EF) and (distance CA = distance FD), then △ABC ≅ △DEF
• if △ABC ≅ △DEF, then m∠BCA = m∠EFD
• if m∠ABC = m∠XYZ, then m∠CBA = m∠XYZ
• if M is the midpoint of line AB, then m∠AMB = 180
• if m∠ABC = 180, then ∠ABX and ∠XBC are supplementary
• if ∠ABC and ∠DEF are supplementary, then (m∠ABC) + (m∠DEF) = 180

• if the following are true:

  • a + b = c
  • d = b

  then a + d = c

• if a + a = 180, then a = 90

Please write your proof in the table below. Each row should contain one claim. The last claim is the statement that you are trying to prove.

Step	Claim	Reason (optional)	Error Message (if any)
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