1. Almost Friday! Warm-Up… Quickwrite… Describe and correct the error
Quickwrite…
What is something that your neighborhood does NOT have that many other neighborhoods or cities have? Why do you think that is?
Ex: “One thing my neighborhood does not have is _______________ I think the reason is ______________________________________.”

2. Compare and Explain…
your Warm-Up answers starting with Student #3 (1 min)
Describe and correct the error

3. Round Robin…
starting with the student who wrote the most at your table (1 min)
What is something that your neighborhood does NOT have that many other neighborhoods or cities have? Why do you think that is?
Ex: “One thing my neighborhood does not have is _______________ I think the reason is ______________________________________.”

4. Homework Answers
6.9 19
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5. Homework Answers

6. Circumcenter of a triangle

7. What are Concurrent Lines?
They are lines that intersect in the same point
This is true of rays and segments as well
The point of intersection is called the point of concurrency
In a triangle, the three perpendicular bisectors are concurrent
The point of concurrency is the circumcenter

8. Theorem

9. How do we know this to be true?

10. Real-Life Example

11. Location of the Circumcenter
The circumcenter P is equidistant from the three vertices, so P is the center of a circle that passes through all three vertices
But the location of P depends on the type of triangle
The circle with center P is said to be circumscribed about the △