<ul><ul><li>Lines </li></ul></ul><ul><ul><li>Angles </li></ul></ul><ul><ul><li>Triangles </li></ul></ul><ul><ul><li>Quadri...
<ul><li>Points </li></ul><ul><li>Line Segment </li></ul><ul><li>Rays </li></ul><ul><li>Lines </li></ul><ul><li>Intersectin...
<ul><li>A Point is a precise location in space. It is labeled with a letter  </li></ul>Point A A Point B B Poin ts
<ul><li>A (line) that starts at one point and ends at another = fg </li></ul>F G Line Segments
<ul><li>A point at were a segment begins but never ends = DE </li></ul>D E Rays
<ul><li>A never ending straight ray that has no beginning = BC </li></ul>B C Lines
<ul><li>A point when two lines, segments or rays meet </li></ul>V  H D  G or N  P T  U Intersecting Lines
<ul><li>An intersection of two lines, all 90 degrees =  </li></ul>A  C  D B   Perpendicular
<ul><li>Lines that never intersect ,but are on the same plane </li></ul>J  K L  M Parallel
<ul><li>Lines not on the same plane </li></ul>Skew
<ul><li>Right </li></ul><ul><li>Obtuse </li></ul><ul><li>Acute </li></ul><ul><li>Adjacent </li></ul>Angles
<ul><li>An angle higher than 90 degree </li></ul>d c  g Obtuse
<ul><li>An angle less than 90 degrees but higher than 0 </li></ul>c a  b Acute
<ul><li>An angle 90 degrees to 0 degrees </li></ul>  A F  Z Right
<ul><li>A line named as an angle that is 180 degrees </li></ul>A  D Straight
<ul><li>The center of an angle named in the middle. Example – angle sgh or angle hgs </li></ul>h s  g  Vertex  / Vertices
<ul><li>An angle that combined with another angle (less than 180 degrees) = a180 degree angle </li></ul>130 degrees  50 de...
<ul><li>An angle combined with another angle (less than 90 degrees) = a 90 degree angle </li></ul>60degrees  30 degrees Co...
<ul><li>An angle directly across from it that is the same degree </li></ul>156 degrees 24 degrees  24 degrees 156 degrees ...
<ul><li>An angle next to another, sharing a line </li></ul>Adjacent Adjacent
<ul><li>Right </li></ul><ul><li>Obtuse  </li></ul><ul><li>Acute </li></ul><ul><li>Scalene </li></ul><ul><li>Isosceles </li...
<ul><li>A triangle with a right angle as one of the three </li></ul>Right
<ul><li>A triangle with an obtuse angle as one of the three </li></ul>Obtuse
<ul><li>A triangle with 1, 2, or 3 acute angles in the three </li></ul>Acute
<ul><li>A triangle with all equal sides </li></ul>Equilateral
<ul><li>A triangle with only two equal sides </li></ul>Isosceles
<ul><li>A triangle with no equal sides </li></ul>Scalene
<ul><li>The sum of all the angles in the triangle adding up to be 180 degrees   </li></ul>80 30  70 The sum=180 degrees Su...
<ul><li>The total of the side length </li></ul>12m  10m  16m 19m  perimeter = 47m  Perimeter
<ul><li>L (Length)  x  W (Width) divided by  1/2  </li></ul>12m  10m  16m 19m Area = 85m squared Area
<ul><li>Quadrilaterals </li></ul><ul><li>Trapezoid </li></ul><ul><li>Area of a Trapezoid </li></ul><ul><li>Parallelogram <...
<ul><li>A shape with 4 connected line segments but no parallel lines </li></ul>Quadrilateral
<ul><li>A quadrilateral with two parallel sides </li></ul>or Trapezoid
<ul><li>The average of the two lengths  x  the height. </li></ul>25cm 15cm 15cm The average of 25 and15 is 20 20cm x 15cm ...
<ul><li>A shape with 2 pairs of parallel sides </li></ul>Parallelogram
<ul><li>B (Base)  x  H (Height) </li></ul>30m  The area of the rhombus is 70m 15m  The area of the rectangle is 450m  10m ...
<ul><li>A quadrilateral that has 2 pairs of parallel sides and 1 pair that is diagonal  </li></ul>Rhombus
<ul><li>A quadrilateral with all 90 degree angles and 2 pairs of congruent sides </li></ul>Rectangle
<ul><li>The L (Length)  x  W (Width) squared </li></ul>20cm 8cm  8cm 20cm 20cm x 8cm =   160cm squared  Area of a rectangle
<ul><li>A rectangle with 4 congruent sides and 4 90 degree angles </li></ul>Square
<ul><li>The length of 1 side  x  3 </li></ul>9m 9m  x  3 sides = 36m Area of a square
<ul><li>A shape with no angles and no straight sides that equals 360 degrees </li></ul>Circle
<ul><li>A straight segment that goes from one end of the circle, to another  example: chord ab </li></ul>A B Chord
<ul><li>A segment that runs from an end of a circle, through the center of the circle, and on the opposite </li></ul>D  N ...
<ul><li>A section of the perimeter </li></ul>Arc
<ul><li>Half of a diameter, used to draw circles </li></ul>15m Radius
<ul><li>A region of to radii and an arc joining together </li></ul>Sector
<ul><li>The perimeter of a circle. The diameter of a circle multiplied by 3.14 (pie) </li></ul>30m C= 94.2 Circumfrence
<ul><li>Pie (3.14) multiplied by the radius squared </li></ul>20m A=1,256 Area
<ul><li>Hexagon </li></ul><ul><li>Octagon </li></ul><ul><li>Regular polygon </li></ul>Other Polygons
<ul><li>A shape with 6 sides an 6 angles </li></ul>Hexagon
<ul><li>A shape with 8 sides and 8 angles </li></ul>Octagon
<ul><li>All sides are congruent </li></ul>Regular polygon
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planergeometry guide

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planergeometry guide

  1. 1. <ul><ul><li>Lines </li></ul></ul><ul><ul><li>Angles </li></ul></ul><ul><ul><li>Triangles </li></ul></ul><ul><ul><li>Quadrilaterals </li></ul></ul><ul><ul><li>Circles </li></ul></ul>The D's Geometry guide for dummies
  2. 2. <ul><li>Points </li></ul><ul><li>Line Segment </li></ul><ul><li>Rays </li></ul><ul><li>Lines </li></ul><ul><li>Intersecting Lines </li></ul><ul><li>Perpendicular Lines </li></ul><ul><li>Parallel Lines </li></ul><ul><li>Skew Lines </li></ul>Lines
  3. 3. <ul><li>A Point is a precise location in space. It is labeled with a letter </li></ul>Point A A Point B B Poin ts
  4. 4. <ul><li>A (line) that starts at one point and ends at another = fg </li></ul>F G Line Segments
  5. 5. <ul><li>A point at were a segment begins but never ends = DE </li></ul>D E Rays
  6. 6. <ul><li>A never ending straight ray that has no beginning = BC </li></ul>B C Lines
  7. 7. <ul><li>A point when two lines, segments or rays meet </li></ul>V H D G or N P T U Intersecting Lines
  8. 8. <ul><li>An intersection of two lines, all 90 degrees = </li></ul>A C D B Perpendicular
  9. 9. <ul><li>Lines that never intersect ,but are on the same plane </li></ul>J K L M Parallel
  10. 10. <ul><li>Lines not on the same plane </li></ul>Skew
  11. 11. <ul><li>Right </li></ul><ul><li>Obtuse </li></ul><ul><li>Acute </li></ul><ul><li>Adjacent </li></ul>Angles
  12. 12. <ul><li>An angle higher than 90 degree </li></ul>d c g Obtuse
  13. 13. <ul><li>An angle less than 90 degrees but higher than 0 </li></ul>c a b Acute
  14. 14. <ul><li>An angle 90 degrees to 0 degrees </li></ul> A F Z Right
  15. 15. <ul><li>A line named as an angle that is 180 degrees </li></ul>A D Straight
  16. 16. <ul><li>The center of an angle named in the middle. Example – angle sgh or angle hgs </li></ul>h s g Vertex / Vertices
  17. 17. <ul><li>An angle that combined with another angle (less than 180 degrees) = a180 degree angle </li></ul>130 degrees 50 degrees Supplumentary
  18. 18. <ul><li>An angle combined with another angle (less than 90 degrees) = a 90 degree angle </li></ul>60degrees 30 degrees Complementary
  19. 19. <ul><li>An angle directly across from it that is the same degree </li></ul>156 degrees 24 degrees 24 degrees 156 degrees Vertical (Opposite)
  20. 20. <ul><li>An angle next to another, sharing a line </li></ul>Adjacent Adjacent
  21. 21. <ul><li>Right </li></ul><ul><li>Obtuse </li></ul><ul><li>Acute </li></ul><ul><li>Scalene </li></ul><ul><li>Isosceles </li></ul><ul><li>Equilateral </li></ul><ul><li>Sum of internal angles </li></ul><ul><li>Perimeter </li></ul><ul><li>Area </li></ul>Triangles
  22. 22. <ul><li>A triangle with a right angle as one of the three </li></ul>Right
  23. 23. <ul><li>A triangle with an obtuse angle as one of the three </li></ul>Obtuse
  24. 24. <ul><li>A triangle with 1, 2, or 3 acute angles in the three </li></ul>Acute
  25. 25. <ul><li>A triangle with all equal sides </li></ul>Equilateral
  26. 26. <ul><li>A triangle with only two equal sides </li></ul>Isosceles
  27. 27. <ul><li>A triangle with no equal sides </li></ul>Scalene
  28. 28. <ul><li>The sum of all the angles in the triangle adding up to be 180 degrees </li></ul>80 30 70 The sum=180 degrees Sum of Eternal Angles
  29. 29. <ul><li>The total of the side length </li></ul>12m 10m 16m 19m perimeter = 47m Perimeter
  30. 30. <ul><li>L (Length) x W (Width) divided by 1/2 </li></ul>12m 10m 16m 19m Area = 85m squared Area
  31. 31. <ul><li>Quadrilaterals </li></ul><ul><li>Trapezoid </li></ul><ul><li>Area of a Trapezoid </li></ul><ul><li>Parallelogram </li></ul><ul><li>Area of a parallelogram </li></ul><ul><li>Rectangle </li></ul><ul><li>Area of a Rectangle </li></ul><ul><li>Rhombus </li></ul><ul><li>Area of a Rhombus </li></ul><ul><li>Square </li></ul><ul><li>Area of a Square </li></ul>Quadrilaterals
  32. 32. <ul><li>A shape with 4 connected line segments but no parallel lines </li></ul>Quadrilateral
  33. 33. <ul><li>A quadrilateral with two parallel sides </li></ul>or Trapezoid
  34. 34. <ul><li>The average of the two lengths x the height. </li></ul>25cm 15cm 15cm The average of 25 and15 is 20 20cm x 15cm = 300cm Area of a Trapezoid
  35. 35. <ul><li>A shape with 2 pairs of parallel sides </li></ul>Parallelogram
  36. 36. <ul><li>B (Base) x H (Height) </li></ul>30m The area of the rhombus is 70m 15m The area of the rectangle is 450m 10m 7m Area of a parallelogram
  37. 37. <ul><li>A quadrilateral that has 2 pairs of parallel sides and 1 pair that is diagonal </li></ul>Rhombus
  38. 38. <ul><li>A quadrilateral with all 90 degree angles and 2 pairs of congruent sides </li></ul>Rectangle
  39. 39. <ul><li>The L (Length) x W (Width) squared </li></ul>20cm 8cm 8cm 20cm 20cm x 8cm = 160cm squared Area of a rectangle
  40. 40. <ul><li>A rectangle with 4 congruent sides and 4 90 degree angles </li></ul>Square
  41. 41. <ul><li>The length of 1 side x 3 </li></ul>9m 9m x 3 sides = 36m Area of a square
  42. 42. <ul><li>A shape with no angles and no straight sides that equals 360 degrees </li></ul>Circle
  43. 43. <ul><li>A straight segment that goes from one end of the circle, to another example: chord ab </li></ul>A B Chord
  44. 44. <ul><li>A segment that runs from an end of a circle, through the center of the circle, and on the opposite </li></ul>D N Diameter
  45. 45. <ul><li>A section of the perimeter </li></ul>Arc
  46. 46. <ul><li>Half of a diameter, used to draw circles </li></ul>15m Radius
  47. 47. <ul><li>A region of to radii and an arc joining together </li></ul>Sector
  48. 48. <ul><li>The perimeter of a circle. The diameter of a circle multiplied by 3.14 (pie) </li></ul>30m C= 94.2 Circumfrence
  49. 49. <ul><li>Pie (3.14) multiplied by the radius squared </li></ul>20m A=1,256 Area
  50. 50. <ul><li>Hexagon </li></ul><ul><li>Octagon </li></ul><ul><li>Regular polygon </li></ul>Other Polygons
  51. 51. <ul><li>A shape with 6 sides an 6 angles </li></ul>Hexagon
  52. 52. <ul><li>A shape with 8 sides and 8 angles </li></ul>Octagon
  53. 53. <ul><li>All sides are congruent </li></ul>Regular polygon

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