OT question, I've seen dozens of algebra solvers now, but are there are good ones for simple geometry problems? Examples are like http://thinkzone.wlonk.com/M

OT question, I've seen dozens of algebra solvers now, but are there are good ones for simple geometry problems? Examples are like http://thinkzone.wlonk.com/MathFun/Triangle.htm http://thinkzone.wlonk.com/MathFun/Triangle.htm https://www.youtube.com/watch?v=xnE_sO7PbBs https://www.youtube.com/watch?v=xnE_sO7PbBs How does a program interact these problems? I assume the hardest part is the input.