World Public Library

Congruence and isosceles and equilateral triangles : Figuring out all the angles for congruent triangles example

Sal Khan

Abstract

If you can take one figure and flip, shift and rotate (not resize) it to be identical to another figure, then the two figures are congruent. This topic explores this foundational idea in geometry. Source: Khan Academy (www.khanacademy.org), used under the Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) license. All Khan Academy content is available for free at www.khanacademy.org. Khan Academy does not endorse the World Public Library.

Read this work at the World Public Library (library card needed).