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Angle Rules Summary
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  • 1. Triangles, Straight and Parallel Lines
    • To complete the homework you need to use combinations
    • of the following rules:
    • Angles in a straight line,
    • Angles in a triangle and quadrilateral,
    • Corresponding, Alternate, Interior and Vertically Opposite angles.
    • The following slides give reminders for each rule.
  • 2. Triangles, Straight and Parallel Lines What size is angle A ? Angles in a Straight Line Equal 180 ° A 45 °
  • 3. 45 ° What size is angle B ? B Angles in a Triangle Equal 180 ° Triangles, Straight and Parallel Lines
  • 4. 90 ° What size is angle B ? B Triangles, Straight and Parallel Lines 90 ° 90 ° Angles in a Q uadrilateral Equal 360 °
  • 5. What size is angle C ? 40 ° Vertically Opposite Angles are Equal Triangles, Straight and Parallel Lines C
  • 6. D What size is angle D ? 140 ° Interior Angles Sum to 180 ° Triangles, Straight and Parallel Lines
  • 7. 40 ° What size is angle E ? E Corresponding Angles are Equal Triangles, Straight and Parallel Lines
  • 8. 140° F What Size is angle F ? Alternate Angles are Equal Triangles, Straight and Parallel Lines