5.3 Medians and Altitude of a Triangle
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November 16, 2015
Warm Up HW Questions?
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5.3 Medians and Altitudes of a Triangle
Goals: • Use properties of medians of a triangle.• Use properties of altitudes of a triangle.
EQ: How would you describe the centroid and orthocenter?
5.3 Medians and Altitude of a Triangle
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November 16, 2015
Vocabulary
Median of a triangle:
Centroid of a triangle:
midpt of one side to opposite vertex
pt of concurrency of medians
Example 1: Using the Centroid of a TriangleR is the centroid of STU and SR = 16. Find SV and RV.
Example 2: Finding the Centroid of a TriangleFind the coordinates of centroid C of DEF.
Try ItR is the centroid of STU and RV = 7. Find SR and SV.
5.3 Medians and Altitude of a Triangle
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November 16, 2015
Try ItFind the coordinates for the centroid for JKL.
J(7, 10), K(5, 2), L(3, 6)
VocabularyAltitude of a triangle:segment to opposite side passing through vertex
Orthocenter of a triangle:pt of concurrency of the altitudes
Example 3: Drawing Altitudes and OrthocentersWhere is the Orthocenter located for each of the triangles?
Try It
SummaryEQ: How would you describe the
centroid and orthocenter?
5.3 Homeworkp.282 #812, 1722, 3945
5.3 Medians and Altitude of a Triangle
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November 16, 2015
Notecard