- #1
Stylewriter
- 8
- 0
1. What reqiurements does a quadrangle need that all the perpendicular bisectors of the sides crosses in one point??
2. And how can you proof it?
To 1. - I think each angle have to be 90° but I can't proof it
2. And how can you proof it?
To 1. - I think each angle have to be 90° but I can't proof it