Triangle Anatomy

Drag to matching side

Lowercase side letters are opposite their uppercase angles.

A B C

The Law of Sines

Slide to balance
5 Adjust side 'b' 20
Balanced! Ratios are not equal...

Law of Cosines

Tap to build formula
a=7 b=10 c=? C=40° A B

Given:

Find:

=
+
-
·

Tap a yellow slot above, then tap a term below to fill it.

Triangle Area

Hold to maximize

Area = . Find the angle for max area!

a = 10 b = 10 {{ step4Data.angle }}°
Area:
{{ step4Data.area.toFixed(1) }}

Press and hold to open hinge.

Maximum Area Reached! (90°)

🏆

Trig Master!

You've unlocked the power to solve ANY triangle, not just the right ones!

Sides & Angles named
Law of Sines balanced
Law of Cosines built
Max Area found