PentagramOne of my 9th grade students brought me this problem last week. The teacher asked them to estimate the five angles of a star. I thought it was a nice problem so I worked out a proof for it. This is what I'd like to share below. #proof #math
One of my 9th grade students brought me this problem last week. The teacher asked them to estimate the five angles of a star. I thought it was a nice problem so I worked out a proof for it. This is what I'd like to share below. #proof #math
![Thoughts about math education [ part 2 ]: Social value of the teacher profession and it's conseq](https://static.wixstatic.com/media/4d04be_4473fb778aaf4e7db5f776a81c228bc3.png/v1/fill/w_220,h_123,fp_0.50_0.50,q_95,enc_auto/4d04be_4473fb778aaf4e7db5f776a81c228bc3.png)
![Thoughts about math education [ part 2 ]: Social value of the teacher profession and it's conseq](https://static.wixstatic.com/media/4d04be_4473fb778aaf4e7db5f776a81c228bc3.png/v1/fill/w_47,h_37,fp_0.50_0.50,q_95,enc_auto/4d04be_4473fb778aaf4e7db5f776a81c228bc3.png)
![Math Puzzle 4. [few solutions]](https://static.wixstatic.com/media/4d04be_6328949553564b669c40ef9325eb80ac.png/v1/fill/w_47,h_45,fp_0.50_0.50,q_95,enc_auto/4d04be_6328949553564b669c40ef9325eb80ac.png)