Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...
STEP 1: Using a pencil and ruler, draw a horizontal line. Set the compass to the width of the line. Place the compass at either end of the line and draw two arcs that cross in the middle. Image ...
丸い円を正確に描きたい時はコンパスなどの道具を使う必要がありフリーハンドで一発で描くのは至難の業。フリーハンドで丸い円をどれだけ正確に描けるかをスコア化して競うことができるサービスが「Draw a Perfect Circle」です。 Draw a Perfect Circleにアクセス ...