Starter quiz

  • In which cases are the angles always equal to each other?
    • adjacent angles on a straight line
    • alternate angles on parallel lines  ✓
    • co-interior angles on parallel lines
    • corresponding angles on parallel lines  ✓
    • vertically opposite angles  ✓
  • Co-interior angles on parallel lines sum to ______°.
    • '180' ✓
  • Which angle is 97°?
    Which angle is 97°?
    • ∠BCD  ✓
    • ∠CBD
    • ∠CDB
    • ∠DBC
  • Match each shape with the sum of its interior angles.
    • decagon
      ⇔
      1440° ✓
    • heptagon
      ⇔
      900° ✓
    • hexagon
      ⇔
      720° ✓
    • nonagon
      ⇔
      1260° ✓
    • octagon
      ⇔
      1080° ✓
    • pentagon
      ⇔
      540° ✓
  • ∠ACE = ∠FEC because <span class="blank">______</span>.
    ∠ACE = ∠FEC because ______.
    • they are alternate angles on the parallel lines  ✓
    • they are corresponding angles on the parallel lines
    • they are vertically opposite angles
  • Which angle is co-interior to ∠ACE?
    Which angle is co-interior to ∠ACE?
    • ∠BCA
    • ∠CEH  ✓
    • ∠ECD
    • ∠FEC
    • ∠GEH
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