Chapter 4 Activity 2
a
The four lines are concurrent.
b
The circle that was constructed passes through the points A,B, and C
c
When the four lines are concurrent, D is on the circle.
d
If the perpendicular bisectors of the sides of a quadrilateral are concurrent, then the quadrilateral is cyclic.
e
If a quadrilateral is cyclic, then the four perpendicular bisectors of the sides of the quadrilateral are concurrent.