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 ...

This equation will be helpful for us to know when drawing a circle onto the console. We need to isolate and find the "r" variable, so we take the sqrt( (x-h)^2 + (y-k)^2 ). The reason why this is ...

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 ...

This Java program allows users to draw basic shapes such as triangles, rectangles, and circles using a graphical interface. The program prompts the user to choose a shape and input its dimensions, and ...