Category: Geometry

Question Number 47788 by behi83417@gmail.com last updated on 14/Nov/18 Commented by behi83417@gmail.com last updated on 14/Nov/18 $$ABCD:square.$$$$\measuredangle AEC=\theta ,\measuredangle BED=\phi .$$$${show}\:{that}:\:\:\:\:\frac{{S}_{{B}\overset{\blacktriangle} {{E}D}} }{{S}_{{A}\overset{\blacktriangle} {{E}C}} }=\frac{{tg}\varphi}{{tg}\theta}…

Question Number 47775 by behi83417@gmail.com last updated on 14/Nov/18 Commented by behi83417@gmail.com last updated on 14/Nov/18 $$\mathbf{ABC}:equilateral.$$$$distanceof\mathbf{D}from:\mathbf{F},\mathbf{E},\mathbf{C}=2,3,6$$$$\left(respectively\right)$$$$\to \dots ..\mathbf{AB}=?$$…

Question Number 47735 by behi83417@gmail.com last updated on 14/Nov/18 Commented by mr W last updated on 14/Nov/18 $$weonlyneedtoknowthedistancesto$$$$threevertexes.thedistancetothe$$$$fourthvertexisnotindependent.$$ Commented…

Question Number 47697 by ajfour last updated on 13/Nov/18 Commented by ajfour last updated on 13/Nov/18 $$Thebluespheretouchesthe$$$$xy,yz,zx,andthetriangular$$$$plate,whilethesmallerpink$$$$spheretouchestheyz,zx,larger$$$${sphere},\:{and}\:{the}\:{triangular}\:{plate}.…

Question Number 47657 by behi83417@gmail.com last updated on 12/Nov/18 Commented by mr W last updated on 13/Nov/18 $$dearfatherfromBehi:$$$$ittookmesometime,butIcouldfinally$$$$\text{You can't use 'macro parameter character \#' in math mode}$$$${this}\:{interesting}\:{question}\:{was}\:{once} \…