1. Do Now: If DA =7, find EA and DE If DF =28, find AB If AB= 9, find DF
Aim: How do we apply CPCTC?
Objective: Students will be able to apply CPCTC
MG21 – Ms.Shin
Jan 13, 2011
Homework # : *Test tomorrow *** Bring calculator. (No cell – phone, no sharing)
Do Now:
Complete the following:
If DA =7, find EA and DE
If DF =28, find AB
If AB= 9, find DF
If EF = 3x – 6 and
AC = x – 1, find EF and BF.

2. If AB = 3x + 8 and DF = 2x + 24, Find AB
MG21 – Ms.Shin
Aim: How do we apply CPCTC?
Objective: Students will be able to apply CPCTC
Jan 13, 2011
Complete the following:
If AB = 3x + 8 and DF = 2x + 24,
Find AB
2)If AC = 3x – 5 and EF = 4x + 2
find EB

3. Aim: How do we use properties of special segments in triangles?
Objective: Students will be able to define and use the centroid / incenter of a triangle
MG21 – Ms.Shin

4. Find the value of x for each and find the length of SV for #4.
Aim: How do we use properties of special segments in triangles?
Objective: Students will be able to define and use the centroid / incenter of a triangle
MG21 – Ms.Shin
Jan 12, 2011
Part II:
Find the value of x for each
and find the length of SV for #4.