Math

• Point


  Can be named by capital letter
• Line


  • Using a lowercase script letter
  • Using 2 capital letters that represent 2 points in the line
• Plane


  • Uses a single script capital letter
  • Uses 3 distinct points on the plane that do not lie on the same line, no specific order
• Kinds of Lines


  • Parallel Lines
  • Skew Lines
  • Concurrent Lines
  • Intersecting Lines
  • Perpendicular Lines
• Parallel Lines


  Coplanar lines which never meet no matter how far they are extended
• Skew Lines


  Noncoplanar lines which never intersect, , no matter how far they are extended
• Concurrent Lines


  3+ lines that meet at a common point
• Intersecting Lines


  Coplanar lines that meet at a common point
• Perpendicular Lines


  Coplanar lines that form a right angle at their point of intersection
• Angle


  The figure formed by 2 rays with a common endpoint called the vertex
• Kinds of Angles


  • Acute Angle
  • Right Angle
  • Obtuse Angle
• Acute Angle


  Greater than 0° but less than 90°
• Right Angle


  Exactly 90°
• Obtuse Angle


  Greater than 90° but less than 180°
• Angle Pairs


  • Adjacent Angles
  • Supplementary Angles
  • Vertical Angles
  • Complementary Angles
• Adjacent Angles


  Angles that share a common side and vertex
• Supplementary Angles


  Angles that add up to 180°
• Vertical Angles


  Angles that are opposite each other and are always congruent
• Complementary Angles


  Angles that add up to 90°
• Angle's points


  • Interior
  • Exterior
  • Points of the angle itself
• How to name an angle

  1. Using 3 points

  2. Using its vertex. 3. Using its number or letter