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.

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Presentation transcript:

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.ShinJan 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.ShinJan 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.ShinJan 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.ShinJan 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.ShinJan 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.ShinJan 12, 2011 Part III: