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05
Triangle Geometry
Three points decide everything else. Drag them and watch the sides, angles and classical centres rearrange themselves in real time.
Drag A, B or C. Every length, angle and centre below is recomputed as you move.
- A
- (-3, -2)
- B
- (4, -2)
- C
- (1, 3)
- a = |BC|
- 5.831
- b = |CA|
- 6.403
- c = |AB|
- 7
- Angle A
- 51.3°
- Angle B
- 59°
- Angle C
- 69.6°
- Area
- 17.5
- Perimeter
- 19.234
- Classification
- acute · scalene
TRIANGLE