1. Find the length of the line segment whose endpoints are (- 5, 6) and (6, 6). 2. Find the distance between the points (-3,-2) and (1,-5).

3. The point (8,-4) lies on a circle. What is the length of the radius of this circle if the center is located at (5,-7)?

4. The coordinates of rectangle PQRS are P(1,6), Q(1,2), R(9,2), and S(9,6). Show that the diagonals are equal in length.

5. The point (7,-9) lies on a circle. What is the length of the radius of this circle if the center is located at (5,-7)? 6. Find the distance between the points (-8,-5) and (1,-5). 7. Find the length of the line segment whose endpoints are (-7, 1) and (-3,-7). 8. Two birds are flying toward a birdhouse that is halfway between them. The birds are at coordinates A (-6, 6) and B (8,-4). What are the coordinates of the birdhouse?

Given that AB DC (not parallel)

A(8,3), B(6,7) C(6,0), D(-5,1)

9. Find the slope of AB. 10. Find the slope of CD. 11. Is ABCD a trapezoid? Explain your answer. 12. Find the length of CB. 13. Find the length of DA. 14. What is the relationship between CB and AD segments?