Construction
you use a straightedge and a compass to draw a figure
Straightedge
a ruler with no markings on it.
Compass
a geometric tool used to draw circles and parts of circles called arcs.
Perpendicular Lines
two lines that intersect to form right angles
Perpendicular Bisector
a line, segment, or ray that is perpendicular to the segment at its midpoint, thereby bisecting the segment into two congruent segments.
Angle Bisector
a ray that divides an angle into two congruent coplanar angles.