Triangle Congruence Explorer
Click on sides and angles of the reference triangle to select them, then test if your selection uniquely determines a congruent triangle.
Reference Triangle
Second Triangle
Selected elements:
✨ Result
Select some sides and/or angles from the reference triangle, then click Test Selection to see if they uniquely determine a congruent triangle.
Congruence Postulate
🏆 Discovered Postulates
💡 Hints & Tips▼
• S stands for Side - a known length
• A stands for Angle - a known angle measure
• Try to find the minimum information needed to guarantee congruence
• Not all combinations work! Some leave room for multiple triangles
• The HL postulate only works for right triangles