Math Geometry Guide

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Math Geometry Guide

  1. 1. Geometry For Dummies Lines Angles Triangle Quadrilateral Circles Other Polygons
  2. 2. Lines <ul><ul><li>Points </li></ul></ul><ul><ul><li>Lines segments </li></ul></ul><ul><ul><li>Rays </li></ul></ul><ul><ul><li>Lines </li></ul></ul><ul><ul><li>Intersecting Lines </li></ul></ul><ul><ul><li>Perpendicular Lines </li></ul></ul><ul><ul><li>Paraell lines </li></ul></ul>
  3. 3. Ray <ul><ul><li>A point where the ray starts at one location and never end. </li></ul></ul>
  4. 4. Points <ul><ul><li>A Point is a precise location with a letter </li></ul></ul>Point A Point B Fontwork
  5. 5. Planes <ul><ul><li>A surface containing all the straight lines that connect any two points on it </li></ul></ul>B
  6. 6. Line Segment <ul><ul><li>A straight line that can be measured </li></ul></ul>B C
  7. 7. Line Segment <ul><ul><li>A straight line that can be measured </li></ul></ul>B C
  8. 8. Line <ul><ul><li>A line that never ends </li></ul></ul>
  9. 9. Properties of Lines <ul><ul><li>Intersecting </li></ul></ul><ul><ul><li>Perpendicular </li></ul></ul><ul><ul><li>Skew </li></ul></ul><ul><ul><li>Parallel </li></ul></ul>
  10. 10. Intersecting Lines <ul><ul><li>Cross at a point </li></ul></ul>
  11. 11. Perpendicular Line <ul><ul><li>Intersect at right angle 90 degrees </li></ul></ul>
  12. 12. Skew <ul><ul><li>Lines that aren't at the same place. </li></ul></ul>
  13. 13. Parallel <ul><ul><li>Line that never cross and are at the same place. </li></ul></ul>
  14. 14. Angles Right Angles Obtuse Angles Acute Angles
  15. 15. Right Angles An angle that is 90 degrees.
  16. 16. Obtuse Angles An angle that is more that 90 degrees. 180
  17. 17. Acute Angles An angle that is less than 90 degrees. 80 degrees
  18. 18. Triangles Equilateral Triangle Isosceles Triangle Scalene Triangle Acute Triangle Obtuse Triangle Right Triangle
  19. 19. Equilateral Triangle A triangle having all three sides equal. The angles of an equilateral triangle all measure 60 degrees.
  20. 20. Isosceles Triangle A triangle having two sides of equal length.
  21. 21. Scalene Triangle A triangle having three sides of different lengths.
  22. 22. Acute Triangle A triangle having three acute angles.
  23. 23. Obtuse Triangle A triangle having an obtuse angle. One of the angles of the triangle measures more than 90 degrees.
  24. 24. Right Triangle A triangle having a right angle. One of the angles of the triangle measures 90 degrees.
  25. 25. Quadrilaterals Square Rhombus Trapezoid Parallelogram Rectangle
  26. 26. Parallelogram <ul><ul><li>A polygon with four side and four angles </li></ul></ul>
  27. 27. Trapezoid <ul><ul><li>A quadrilateral plane figure having two parallel and two nonparallel sides </li></ul></ul>
  28. 28. Rectangle A rectangle is a square but stretched out two sides are equal and the other are equal but a different size.
  29. 29. Rhombus <ul><ul><li>A rhombus is a square but tilted </li></ul></ul>
  30. 30. Square <ul><ul><li>All sides congruent and both sides are parallel </li></ul></ul>
  31. 31. Circles Chords Diameter Arc Radius Sector Circumference Area of a Circle
  32. 32. Chords Segment connecting two outside points on a circle. E J EJ
  33. 33. Diameter Longest chord on a circle; passes through the center of the circle. T E TE
  34. 34. Arc The portion of the circle E J
  35. 35. Radius Half of the length of the diameter; runs from the center of the circle to its edge. J E
  36. 36. Sector A slice of a circle's area, defined by two points on the outside boundaries. The vertex of the slice is the center of the circle. E F
  37. 37. Circumference The distance around the outside of a circle; its perimeter. 3.14
  38. 38. Area of a Circle The amount inside the circle. Pie r 2
  39. 39. Other Polygons Pentagon Hexagon Heptagon Octagon Nonagon Octagon
  40. 40. Pentagon A five-sided polygon. The sum of the angles of a pentagon is 540 degrees.
  41. 41. Hexagon A six-sided polygon. The sum of the angles of a hexagon is 720 degrees.
  42. 42. Heptagon A seven-sided polygon. The sum of the angles of a heptagon is 900 degrees.
  43. 43. Octagon An eight-sided polygon. The sum of the angles of an octagon is 1080 degrees.
  44. 44. Nonagon A nine-sided polygon. The total of the angles of a nonagon is 1260 degrees.
  45. 45. Decagon A ten-sided polygon. The sum of the angles of a decagon is 1440 degrees.
  46. 46. The Credits Directed by: Emma Jia Designed by: Emma Jia Pictures from: http://www.flickr.com http://www.mathleague.com From: Room 15, Mr. Lindsay's class

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