1. GT Geometry 1/7/13
• Take out HW and put on the
corner of your desk.
• Drill # 2.25?
• Objective: STW demonstrate
what they have learned about
special segments in triangles

2. Use the figure for Items 1–3. In ∆ABC, AE
= 12, DG = 7, and BG = 9. Find each
length.
1. AG 8
2. GC 14
3. GF 13.5
For Items 4 and 5, use ∆MNP with
vertices M (–4, –2), N (6, –2) , and
P (–2, 10). Find the coordinates of
each point.
4. the centroid (0, 2)

3. Use the diagram for Items 5–7. Find each
measure.
5. ED 10
6. AB 14
7. m BFE 44°

4. 8. Find the value of n.
16
9. ∆XYZ is the midsegment triangle of ∆WUV. What
is the perimeter of ∆XYZ?
11.5

5. Find the average of the x-coordinates and the
average of the y-coordinates of the vertices of
∆PQR. Make a conjecture about the centroid of a
triangle.