Maths

• How many degrees in a straight line?

  180
• How many degrees in a circle?

  360
• Find the area of L: 2.5 W:6?

  15
• find the area?


  length times with width
• Find the perimeter of a shape?

  sum of all sides
• Linear Graph


  A graph where the relationship between variables is a straight line
• Independent Variable


  The variable being manipulated or changed in an experiment
• Point


  A location in space, represented by a set of coordinates (x, y)
• Line


  A set of points that extend infinitely in two directions
• Line Segment


  A part of a line with a fixed length
• Ray


  A line that extends infinitely in one direction
• Angle


  The measure of rotation between two lines or planes
• Acute Angle


  An angle less than 90 degrees
• Right Angle


  An angle equal to 90 degrees
• Obtuse Angle


  An angle greater than 90 degrees but less than 180 degrees
• Straight Angle


  An angle of exactly 180 degrees
• Triangle


  A polygon with three sides
• Quadrilateral


  A polygon with four sides
• Polygon


  A general term for a closed shape with three or more sides
• 7x+2y+x+3y?


  8x+5y
• 3x-1=11?


  x=4