tag:blogger.com,1999:blog-4227811469912372962.post7832622042731019616..comments2018-05-21T19:53:52.802-07:00Comments on Math off the grid: Cool Geometry ProblemBenjamin Leisnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4227811469912372962.post-2566218657341856012015-05-20T15:27:35.759-07:002015-05-20T15:27:35.759-07:00A variation of this problem was posed at a primary...A variation of this problem was posed at a primary school mathematics Olympiad in 2005, which goes to show that it's either too simplistic for secondary school (plug numbers into a formula), or too advanced for even above-average primary school students.<br /><br />That some people (we don't mean you) pose such questions on the web without sufficient analysis goes to show that many haven't a clue about matching problems to their audience. On the web it may not matter much, but it's all too common in classrooms, and that is regrettable.<br /><br />That the four triangles have equal area, though, is indeed important and accessible.<br /><br />Here's a picture of a solution that does not require anything beyond "area of a triangle":<br /><br />https://docs.google.com/document/d/1cnvMQdJcvqyko8nTVdQGvnLxqjXcAHprDoCT5OPihNI/editFive Triangleshttps://www.blogger.com/profile/12846752710456413605noreply@blogger.comtag:blogger.com,1999:blog-4227811469912372962.post-8292645859568525002015-05-20T14:46:36.035-07:002015-05-20T14:46:36.035-07:00This comment has been removed by the author.Five Triangleshttps://www.blogger.com/profile/12846752710456413605noreply@blogger.com