Geometry Formulas
Every area, perimeter, volume and surface area formula with a figure for each shape, printable as a free PDF.
Math Formulas
Every formula of a subject on one printable sheet, with a figure for each shape and every symbol named. Read them here, quiz yourself, or print the free PDF.
Trigonometry Formulas
All the trig identities on one sheet: ratios, Pythagorean, double and half angle, sum and difference, laws of sines and cosines.
A formula sheet is for looking things up, not for learning them. Each formula here links to the page that explains where it comes from, or to a calculator that works it on your own numbers, and quiz mode hides the formulas so you can check which ones you actually know.
Common questions
Are these formula sheets free to print?
Yes. Every sheet is a free PDF you can print, copy and hand out, and a PNG for slides and notes. There is nothing to sign up for.
Which formula sheets are there?
Geometry (area, perimeter, volume, surface area, circles, triangles and coordinates) and trigonometry (the ratios, every identity, the laws of sines and cosines, radians and graphs). More subjects are on the way.
Can I use a formula sheet in an exam?
That depends on the exam. Many give you a reference sheet of their own, and some allow none. Practise with the sheet your exam actually provides, and use these to learn and review.
