GEOMETRY

• Parallel lines


  Lines that point in exactly the same direction and will never cross
• Intersection


  The point where lines cross
• Angle


  The space between intersecting lines
• Arc


  A part of a circle that can represent an angle between two intersecting lines
• Perpendicular lines


  Intersecting lines that form all exactly equal angles
• Right angle


  A square corner formed by perpendicular lines
• Acute angle


  An angle that is smaller or less than a right angle