Head first 2D geometry
Having trouble with geometry? Do Pi, The Pythagorean Theorem, and angle calculations just make your head spin? Relax. With Head First 2D Geometry, you'll master everything from triangles, quads and polygons to the time-saving secrets of similar and congruent angles -- and it'll be quick,...
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| Formato: | Libro electrónico |
| Idioma: | Inglés |
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Sebastopol, California :
O'Reilly
2010.
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| Edición: | 1st edition |
| Colección: | Head first series.
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| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009628416206719 |
Tabla de Contenidos:
- Advance Praise for Head First 2D Geometry; Praise for other Head First books; Copyright; Dedication; The Authors; Table of Contents; How to Use this Book: Intro; Who is this book for?; We know what you're thinking.; And we know what your brain is thinking.; Metacognition: thinking about thinking; Here's what WE did:; Read Me; The technical review team; Acknowledgments; Safari® Books Online; Chapter 1: Finding Missing Angles: Reading Between the Lines; There's been a homicide; In the ballistics lab you've got to cover all the angles; Do the angles between Benny, Micky, and the bullet match up?
- Right angles aren't always marked with numbersAngles can be made up of other, smaller angles; Complementary angles always add up to a right angle (90o); Right angles often come in pairs; Angles on a straight line add up to 180o; Pairs of angles that add up to 180o are called supplementary angles; Vertical angles are always equal; The corner angles of a triangle always add up to a straight line; Find one more angle to crack the case; Something doesn't add up!; If it doesn't all add up, then something isn't as it seems; You've proved that Benny couldn't have shot Micky!
- We've got a new sketch-now for a new ballistics reportWe need a new theory; Work out what you need to know; Tick marks indicate equal angles; Use what you know to find what you don't know; The angles of a four-sided shape add up to 360o; Parallel lines are lines at exactly the same angle; Parallel lines often come with helpful angle shortcuts; Great work-you cracked the case!; Your Geometry Toolbox; Chapter 2: Similarity and Congruence: Shrink to Fit; Welcome to myPod! You're hired; Liz wants you to etch her phone; The designer noted some of the details
- The design tells us that some triangles are repeatedSimilar triangles don't just look the same; To use similarity, you need to be able to spot it; You can spot similar triangles based on just two angles; Employee of the month already?; You sketch it-we'll etch it!; Fire up the etcher!; The boss isn't happy, but at least you're not fired...; It's a problem of scale...; Complex shapes can be similar, too; You sketch it-we'll etch it (to fit); Liz is back with a special request; Similar shapes that are the same size are congruent; Use what you know to find what you don't know
- Ratios can be more useful than sizesRatios need to be consistent; Your new design ROCKS!; Your Geometry Toolbox; Chapter 3: The Pythagorean Theorem: All the Right Angles; Giant construction-kit skate ramps; Standard-sized-quick-assembly-what?!?; The ramps must have perpendicular uprights; You can use accurate construction to test ramp designs on paper; Not all lengths make a right triangle; You can explore a geometry problem in different ways; In geometry, the rules are the rules; Any good jump has some similar scaled cousins; The lengths of the sides are linked by a pattern
- The square of the longest side is equal to the squares of the other two sides added together
