This video covers one type of bisector, the type that splits a segment into two congruent halves at a right angle. The theorem states that if a point is on a segment's perpendicular bisector, it's equidistant from the segment's endpoints, resulting in... congruent triangles!

Angle Bisectors in Triangles

This video covers the theorem that states that if a point is on an angle's bisector, it's equidistant from the sides of the angle. Not surprisingly, this will create congruent triangles! Geometry is so predictable...

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If you do not have an account, you should get one, because it is awesome! You can save a playlist for each test or each chapter, and save your "greatest hits" into a "watch right before the final" list (not that we recommend cramming, but when in Rome...)