2. Geometry Mini-Lesson (1, −1) (−1, 1) (6, 3) (−6, −3)
What is the coordinate of the midpoint of GH?
(1, −1)
(−1, 1)
(6, 3)
(−6, −3)
MA.912.G.1.1: Find the lengths and midpoints of line segments in two-dimensional coordinate systems.

3. Geometry Mini-Lesson
Quadrilateral ABCD is shown below. What is the length of diagonal AC?
6 . 1
7 . 9 15 18
MA.912.G.1.1: Find the lengths and midpoints of line segments in two-dimensional coordinate systems.

4. Geometry Mini-Lesson
The circle shown is centered at (−4, 2) and contains the point (2, 7). Which of the following is closest to the length of the diameter of the circle? (Remember that the diameter of a circle is twice the length of the radius.)
7 . 8
9 . 2
15 . 6
18 . 4
MA.912.G.1.1: Find the lengths and midpoints of line segments in two-dimensional coordinate systems.

5. Geometry Mini-Lesson
The coordinate of the midpoint of EF is X (−2, 7) and the coordinate of the endpoint E is (3, −1). What is the y-coordinate of endpoint F? 5 10 15 20
MA.912.G.1.1: Find the lengths and midpoints of line segments in two-dimensional coordinate systems.

6. Geometry Mini-Lesson (3, 2) (2, 3) (−6, 4) (6, −4)
Find the coordinate of the midpoint of PQ shown below?
(3, 2)
(2, 3)
(−6, 4)
(6, −4)
MA.912.G.1.1: Find the lengths and midpoints of line segments in two-dimensional coordinate systems.