MATHEMATICS M-5

• Bisector – a line that divides the figure into two congruent parts
• Perpendicular Bisector – a bisector that form right angle on the line it

  bisects.
• Compass – is an instrument for drawing circles and arcs and

  measuring distances between points, consisting of two arms linked

  by a movable joint, one arm ending in a point and the other usually

  carrying a pencil or a pen.
• A straightedge could a ruler (with or without units)

  used to guide in making a straight line or figure.