G. Lara Geometry Book

GUILLERMO LARA, Aug 23, 2014

Selected worksheets for High School Geometry classes.


  • 1. 5.5 (McDougal Littell Geometry) Triangle Inequality Theorem
  • 2. All kinds of parallelograms
  • 3. Explore circumcenters, incenters, centroids and orthocenters
  • 4. All kinds of trapezoids
  • 5. All kinds of rhombi
  • 6. All kinds of kites
  • 7. All kinds of squares
  • 8. Exterior Angle Theorem
  • 9. Triangle Side Angle Exploration
  • 10. Parallel lines
  • 11. Incenter
  • 12. Orthocenter
  • 13. Interior Angles - Polygons
  • 14. Circumcenter
  • 15. Centres of a Triangle
  • 16. Constructing a Perpendicular Bisector / Mid-point
  • 17. area of a parallelogram
  • 18. tangent-chord angle
  • 19. triangle midpoint theorem
  • 20. Distance Formula

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5.5 (McDougal Littell Geometry) Triangle Inequality Theorem

Given a side length "c" of 10, experiment with various lengths for sides a and b using sliders. What values form a triangle and which do not? What is characteristic of those that do and do not?

If you have not noticed, a triangle can only be formed when a+b>c.
– jcab09

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