unit 3

• Angle


  The space between two intersecting lines or between two planes

  
• Types of angles

  • Acute
  • Obtuse
  • Right
  • Reflex
• Drawing and measuring angles

  1. Look at the angles

  2. Copy and complete the table

  3. Use pencil, ruler and protractor to draw the angles

  4. Identify the type of angle

  
• Line segment


  A part of a line between two points
• Constructing 2D shapes


  1. Draw line segments using pencil, ruler and compasses

  2. Measure line segments using compasses

  3. Construct triangles using given information
• Parallel lines


  • Lines that never intersect and are always the same distance apart
• Perpendicular lines


  • Lines that intersect at right angles (90 degrees)

  
• Identifying and drawing parallel and perpendicular lines

  1. Name the lines as parallel, perpendicular or intersecting

  2. Draw parallel lines to given lines

  3. Draw a line parallel to a given line segment

  4. Draw a line perpendicular to a given line segment
• It is not possible for two lines to be both perpendicular and parallel