Constructing Bisectors of Lines and Angles Geometry Geometric Constructions Constructing Bisectors of Lines and Angles Questions Given: A line segment AC with AB=BC Prove: 1/2AC=BC? In a triangle DeltaABC, AB and AC are extended and bisectors of exterior angles are drawn to intersect at O. Find the m/_CBO? Geometric Constructions View all chapters Constructing Bisectors of Lines and Angles Constructing Regular Polygons Inscribed in Circles Constructing Circumcircles and Incircles Constructing a Line Tangent to a Circle Next