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Geometry Tutorials

Similar vs Congruent Triangles: What’s the Difference?

Similar triangles have the same shape; congruent triangles have the same shape AND size. Side-by-side comparison, the rules…

Geometry Tutorials

Pythagorean Theorem: 10 Worked Examples From Easy to Hard

Ten Pythagorean theorem examples from basic right-triangle leg-finding to applied 3D distance and Pythagorean triples. Each with full…

Geometry Tutorials

How to Prove Two Triangles Are Congruent: 5 Methods

Five rock-solid ways to prove triangle congruence: SSS, SAS, ASA, AAS, and HL. Each method explained with worked…