## Geometry

### Threads

- Notes on Harvard "Notes on spherical geometry" (0 Replies)
- Infinite triangles share circumcircle and inscribed circle (1 Reply)
- Inscribed circle centre problem (3 Replies)
- Points of tangency and concyclic (0 Replies)
- The sum of the squares of the lengths from a point on unit circle to vertices of its inscribed equilateral triangle (1 Reply)
- A Geo-Inequality: \(P \in \triangle^{\circ}_{ABC} \Rightarrow \frac{PA}{a}+\frac{PB}{b}+\frac{PC}{c} \ge \sqrt{3}\) (0 Replies)
- Points on curve y = 1/x (0 Replies)
- A range problem (1 Reply)
- Find points of tangency (1 Reply)
- Circle and Chord Properties (1 Reply)
- Complex numbers and geometry (1 Reply)
- Heptadecagon/Heptakaidecagon with a compass and straightedge (0 Replies)
- Show that a unit cube is the union of 3 congruent pyramids with unit square base and height 1 (0 Replies)
- \( (0 < A, B, C < A+B+C=\pi) \Rightarrow \sin A + \sin B + \sin C \leq \frac{3\sqrt{3}}{2} \) (0 Replies)
- Angle bisector length in a triangle (0 Replies)