Geometry For Dummies by Mark Ryan

Learning geometry doesn't have to hurt. With a little bit of friendly guidance, it can even be fun "Geometry For Dummies, " "2nd Edition, " helps you make friends with lines, angles, theorems and postulates. It eases you into all the principles and formulas you need to analyze two- and three-dimensional shapes, and it gives you the skills and strategies you need to write geometry proofs. Before you know it, you'll be devouring proofs with relish. You'll find out how a proof's chain of logic works and discover some basic secrets for getting past rough spots. Soon, you'll be proving triangles congruent, calculating circumferences, using formulas, and serving up pi. The non-proof parts of the book contain helpful formulas and tips that you can use anytime you need to shape up your knowledge of shapes. You'll even get a feel for why geometry continues to draw people to careers in art, engineering, carpentry, robotics, physics, and computer animation, among others. You'll discover how to: Identify lines, angles, and planesMeasure segments and anglesCalculate the area of a triangleUse tips and strategies to make proofs easierFigure the volume and surface area of a pyramidBisect angles and construct perpendicular linesWork with 3-D shapesWork with figures in the x-y coordinate system

So quit scratching your head. "Geometry For Dummies, 2nd Edition, " gets you un-stumped in a hurry.