Triangle Congruence Investigation - Ferris

Caroline Psutka, Mr. F, 13.11.2024

What consecutive triangle parts need to be congruent in order to show that two triangles are congruent? These applets allow students to explore whether triangle relationships (SSS, AAA, SAS, SSA, ASA, AAS) force triangles to be congruent or not. Are you able to create a non-congruent pair of triangles?


  • 1. Start here
  • 2. SSS - 3 pairs of congruent sides
  • 3. AAA - 3 pairs of congruent angles
  • 4. SAS - 2 Congruent Sides with Congruent Angle in Between
  • 5. ASS - 2 Congruent Sides with a Congruent Angle NOT in between
  • 6. ASA - 2 Pairs of Congruent Angles with a Congruent Side in Between - Ferris
  • 7. AAS - Two congruent angles and a side NOT in-between them - Ferris
  • 8. Cool Off
  • 9. Challenge: ASS with a given angle greater than or equal to 90
  • 10. You are doing great. Keep going
  • 11. How did you enjoy this?

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Start here

Victoria and Kendra seeing we have another GeoGebra day
bear with me on this yall
pls
– Mr. F

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