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Triangles animations

4 verified, narrated animations about triangles, reviewed by hand and checked frame by frame. Watch free; download the video or the Manim file with any paid plan.

The law of cosines is Pythagoras with a correction
The law of cosines is Pythagoras with a correction

A triangle with sides a and b and included angle C morphs while c is computed live from c squared equals a squ…

Pythagorean Theorem With A 3-4-5 Triangle
Pythagorean Theorem With A 3-4-5 Triangle

A right triangle with legs 3 and 4 units and hypotenuse 5 units is drawn on screen, with squares built on each…

Why a² + b² = c²: rearrange four triangles
Why a² + b² = c²: rearrange four triangles

Two identical large squares each contain four congruent right triangles arranged differently. In one square th…

Constructing An Equilateral Triangle With Compass
Constructing An Equilateral Triangle With Compass

This animation demonstrates the classical ruler-and-compass method for constructing an equilateral triangle wi…

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