Google Classroom
GeoGebraGeoGebra Classroom

Bisecting an Angle

Given some angle ,
  • Create point on either line segment or
  • Using the Compass tool, construct a circle with radius centered @ point
  • Using the Intersect tool, create the point of intersection () between your circle and the segment not containing point
  • Create point , not on angle
  • Using the Compass tool, construct a circle with radius centered @ point
  • Using the Compass tool, construct another circle with radius centered @ point
  • Using the Intersect tool, create the points of intersection ( and ) between the two most recently constructed circles ( and )
  • Using the Ray tool, construct
is the angle bisector of . What is the relationship between and ? Use the Angle tool to verify your answer. Does your construction pass the Drag Test?