Special right triangle
Videos
A special right triangle is a right triangle with some notable feature that makes calculations on the triangle easier, or for which simple formulas exist.
Set square shaped as 45°–45°–90° triangle
Set square, shaped as 30°–60°–90° triangle
Berlin Papyrus 6619
Videos
The Berlin Papyrus 6619, simply called the Berlin Papyrus when the context makes it clear, is one of the primary sources of ancient Egyptian mathematics and part of the Berlin Papyrus Collection. One
Berlin Papyrus 6619, as reproduced in 1900 by Schack-Schackenburg
