Geometry - Isosceles triangles, practice and proof

Dear Isosceles triangle, thank you for being considerate enough to have at least two sides and two angles congruent. So many triangles can be so inconsistent, but you're just more reliable. I hope to be able to understand you better as we spent more time together. This is truly a love triangle, thank you. Yours, the people. YAY MATH! Please visit yaymath.org Videos copyright Yay Math (c)