Quiz (1 point)

• if quadrilateral ABCD is an isosceles trapezoid, then distance AD = distance BC
• if quadrilateral ABCD is an isosceles trapezoid, then AB || DC
• if (AB || YZ) and (m∠AXB = 180), then AX || YZ
• if (AB || CD) and (AC || BD), then ABDC is a parallelogram
• if WXYZ is a parallelogram, then distance WZ = distance XY

• if the following are true:

  • a = b
  • a = c

  then b = c

• if distance XZ = distance YZ, then m∠ZXY = m∠XYZ
• if AB || CD, then DC || BA
• if m∠ABC = x, then m∠CBA = x
• if (WX || YZ) and (m∠RXZ = 180), then m∠WXR = m∠YZX

• if the following are true:

  • a = b
  • a = c

  then b = c

• if (m∠DAX = m∠XBC) and (m∠AXB = 180), then m∠DAB = m∠ABC

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.