Page 192 - IM_FL_Geometry_Print Sample

Solution
a. radians b. radians
Problem Statement
Jada says, “Here are 2 perpendicular bisectors of a quadrilateral. That means the point where they intersect is the circumcenter!” Kiran responds, “No, we still need to check a third perpendicular bisector to make sure it intersects at the same point.” How many perpendicular bisectors do we need to check?
Solution
Sample response: Kiran is right that we need to check three perpendicular bisectors. Label the quadrilateral . A point on the perpendicular bisector of segment is equidistant from points and . If it were also on the perpendicular bisector of segment , we could say it is the same distance from points , , and . To be equidistant from all 4 points, we need to check that one more perpendicular bisector intersects the others at the same point.
Unit 7 Lesson 11 Practice Problems 119