Sultan Temuruly
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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.

-6-5-4-3-2-1123456-4-3-2-1123451.3°59°69.6°ABC

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