Forget Waldo—Where is 'the Orthocenter'?

Where is the center of a triangle? Individuals draw perpendicular lines representing the altitudes of a triangle. Finding the intersection gives the location for the orthocenter of the triangle.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Have the class begin a graphic organizer to summarize concurrency points for triangles
Classroom Considerations
  • Pupils should be familiar with perpendicular lines
  • Learners must be able to solve systems of equations
  • Color coding helps distinguish the lines
  • Provides some suggestions for formative and summative assessment
  • None
Common Core