Ratio, proportion and rates of change. NEW: Equivalent ratios and simplifying ratios. Revise how to work out equivalent ratios and simplify ratios by dividing both sides by the highest common factor.

This article was originally published with the title “ A Brief History of Aspect Ratios, aka Screen Proportions ” in Scientific American Magazine Vol. 318 No. 3 (March 2018) doi:10.1038 ...

Mystery of golden ratio explained Date: December 21, 2009 Source: Duke University Summary: The golden ratio is a geometric proportion that has been theorized to be the most aesthetically pleasing ...