Plane and solid geometry has been one of my favorite subject in school. You would often solve for the perimeter and area of common geometrical shapes such as rectangles, squares and circles and they’re greatly applicable in real life. It’s important to understand the underlying principles behind them. One of the example is a circle’s circumference. You have to ask why it is twice the product of pi and its radius. You might also ask why parallelogram’s area is equals the product of its base times height.
But its also important to have a cheatsheet when you get lost to help you get back on track. Below are the list of references you may purchase from the store either through download or a printed one delivered through your doorstep.