How to find speacial points on a coordinate plane

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5 Terms

1
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Circumference

  • Find the midpoint of each side of the triangle

  • Find the slope of each side of the triangle.

  • Use the midpoint and perpendicular slope to graph the perpendicular bisector of each side.

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Centroid

  • Find the midpoint of each side of the triangle.

  • Connect the midpoint of each side to the vertex opposite the side.

  • These lines are the medians

  • Find the intersection of the three medians.

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Altitude

  • Find the slope of each side of the triangle. Then determine the perpendicular slope for each side.

  • Find the equation of each altitude by starting at each vertex and using its corresponding perpendicular slope from the opposite side.

  • Find the intersection of the three altitudes.

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