Angle Bisector Constructions
- Author:
- Jennie Bass, AJ Storck
- Topic:
- Angles, Geometry, Mathematics
Follow these steps to bisect an angle:
1) Using the POINT TOOL, mark point D on segment AB
2) Using the COMPASS TOOL, create a circle with radius AD and center point A
3) Using the POINT TOOL, mark point E where circle A intersects segment AC
4) Using the COMPASS TOOL, create a circle with the radius DE and center point D
5) Using the COMPASS TOOL, create a circle with the radius DE and center point E
6) Using the POINT TOOL, mark points F and G where circle E intersects circle D
7) Using the SEGMENT TOOL, draw a segment connecting points A, F, and G.
8) Use the ANGLE TOOL to show that angle BAC was bisected (split into two congruent angles).
Because the angles are so close together, the 2nd angle measure may cover the first. Don't worry about
it!
RESULTS: Segment AF is the Angle Bisector of angle CAB
Construction #1
Construction #2
Construction #3
Click the link below to return to the assignment page.
Basic Constructions Workbook