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

Topics are:

1)Midsegment

2)Perpendicular bisector

3)Angle bisector & Incenter

4)Median & Centroid

5)Two Column Proofs, using CPCTC

Do Now:

Homework # :*Project due on Thursday. *Test on Friday ***

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

Complete the following:1) A _________________is the segment joining the

midpoint of any 2 sides of a triangle.

2) A point of concurrency of the three angle bisectors of a triangle is called ______________.

3) A point of concurrency of the three medians of a triangle is

called ________________.

In the diagram, DF and EF are midsegements of ΔABC.1)Find the length of DF and 2)AB.

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 I:

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: 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 Jan 12, 2011

Part II: Find the value of x and find the length of SV

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 III: