Creating angle bisectors

Step 1: Evaluate

1. Examine the two angle bisector constructions.
   Example 1 Example 2

Which angle bisector was created by following the construction steps correctly? __
How do you know?( 2 to 3 sentences )
Which angle bisector was constructed incorrectly? Explain the step that was completed incorrectly. ( 2 to 3
sentences )

1. Two students created a list of steps for the following construction. You are given and point C. Construct a line
   parallel to that passes through point C.
   Student A Student B
   Draw a line that intersects points B and C. Draw a line that intersects points B and C.
   Draw a line through point C and point G. Place the compass on point B, and swing an arc
   that crosses line AB and line BC. Label the points
   D and E.
   Keep the compass at the same width, and place
   it on point C.
   Keep the compass at the same width, and place it
   on point C.
   Keeping the compass at the same width, place it
   on point F.
   Swing an arc that crosses line BC, and label the
   point F.
   Mark the intersection of the two arcs as point G. Open the compass to the width between points D
   and E.
   Open the compass to the width between points D
   and E.
   Keeping the compass at the same width, place it
   on point F.
   Place the compass on point B, and swing an arc
   that crosses line AB and line BC. Label the points
   D and E.
   Swing an arc that intersects the arc created from
   line BC at point C.
   Swing an arc that crosses line BC, and label the
   point F.
   Mark the intersection of the two arcs as point G.
   Answer:
   Answer:
   Which student has steps in the correct order, and which does not? Explain.
   2.What inscribed polygon is being constructed? Explain how you know.
   Step 2: Construct
   You choose Either bisect a line segment or an angle
   Bisect a Line Segment Video: bit.ly/Segmentbisector Bisect an Angle Video: bit.ly/AngleBisector
   Answer ONE of the questions below:
   If you chose a line segment, how are the construction steps you completed similar to the steps you would have
   taken to construct and bisect an angle? How are they different?
   Swing an arc that intersects the arc created from
   line BC at point C.
   Draw a line through point C and point G.
   Answer:
   Answer:
   Answer:
   If you chose an angle, how are the construction steps you completed similar to the steps you would have taken to
   construct and bisect a line segment? How are they different?
   Answer:
   Answer: