Angles & Parallel Lines

• • Two angles that add up to 90º is a complimentary angle
  • Two angles that add up to 180º is a supplementary angle
• • Reflex angles is bigger than 180º
  • Acute angles is smaller than 90º
  • Right angles is exactly 90º
  • Obtuse angles is bigger than 90º, smaller than 180º
• • Parallel lines never meet
  • Transversal is when a line intersects with two other lines
• When two parallel lines are cut by a transversal, their corresponding and alternate angles are equal
• • You can recognise corresponding angles with a "F"
  • You can recognise alternate angles with a "Z"
• • Interior angles are supplementary
  • Alternate angles are equal
  • Corresponding angles are equal