Congruent Triangles: Math Videos

This series is about congruent triangles, which are triangles with exactly the same size and shape. You will learn the rules, like SSS, that prove two triangles are congruent, and why some shortcuts do not work. You will also work with isosceles and equilateral triangles and write your own geometry proofs. Proofs build careful, logical thinking that is useful far beyond math. You should be comfortable with angles and basic geometry first.

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